Youth-Led Change: How Two Sisters Built a Movement to Ban Single-Use Plastic Bags Across Bali

One. Introduction

One point One Research Background and Significance

Global plastic production has surged more than two hundred percent since the turn of the millennium, with single-use plastic bags accounting for more than half of all plastic waste entering marine ecosystems every year. For decades, mainstream environmental advocacy has centered on adult-led, top-down campaigns run by large, well-funded nonprofits, focused almost exclusively on incremental policy compromises and individual consumer behavior change. These campaigns have delivered only marginal progress in most regions, leaving coastal communities like Bali drowning in plastic waste that destroys ecosystems, damages tourism economies, and threatens public health. There has been a longstanding, unchallenged assumption that meaningful environmental policy change requires large budgets, professional organizers, political connections, and adult leadership. The Wijsen sisters’ campaign directly shattered this assumption, offering a proven, replicable model for youth-led grassroots organizing that delivers bold, uncompromising policy wins with almost no resources.
Practically, this analysis gives young activists, community organizers, and local environmental groups a step-by-step, field-tested framework for winning systemic change without institutional support, large budgets, or prior experience. Theoretically, it fills a critical gap in social movement scholarship, which has historically framed young people as symbolic participants rather than independent, strategic leaders of successful policy campaigns.

One point Two Core Concept Definition

For this analysis, dignified youth-led grassroots campaigning refers to the model developed by the Wijsen sisters: a community-centered, youth-governed campaign framework built on four core pillars: uncompromising clarity of demand, hyper-local public support building, peaceful morally rooted direct action, and unwavering refusal of incremental half-measures. The model centers young people as full, autonomous decision-makers and public faces of the campaign, leveraging the unique moral authority of children fighting for their own future to cut through political apathy and public cynicism.
It is critical to distinguish this model from three common, less effective campaign frameworks. First, it differs from top-down NGO advocacy, which relies on closed-door lobbying, political connections, and compromise with industry, and often prioritizes incremental, symbolic wins over meaningful systemic change. Second, it differs from confrontational, anger-centered direct action, which often generates public backlash and allows politicians to dismiss activists as extremist or unreasonable. Third, it differs from individual behavior change campaigns, which place the burden of solving plastic pollution on ordinary consumers rather than demanding systemic policy change from governments and corporations.
This analysis focuses specifically on the Bye Bye Plastic Bags campaign in Bali, its strategy and tactics, and its transferability to other local and regional environmental campaigns. It does not cover national or international advocacy campaigns, or campaigns focused primarily on corporate rather than government policy change.

One point Three Domestic and Overseas Research Status

Youth activism research has expanded dramatically over the past fifteen years, driven by the rise of the global youth climate movement and youth-led campaigns around the world. Early research in the two thousands framed youth activists as auxiliary participants in adult-led movements, valued primarily for their energy and symbolic value rather than their strategic leadership. In more recent years, a growing body of scholarship has documented that youth-led campaigns often outperform adult-led campaigns on multiple metrics, but there remains almost no practical, accessible playbook for youth organizers based on proven successful models.
Within environmental organizing, there remains near-universal consensus among professional organizers that successful campaigns require paid staff, six-figure budgets, and experienced adult leadership. The success of the Bye Bye Plastic Bags campaign directly contradicts this consensus, and has forced a growing number of organizers and organizations to rethink their core assumptions about who can lead winning campaigns.
A major persistent gap in both research and practice is the near-total exclusion of young people from formal campaign training, funding, and institutional support. Almost all grant programs, activist fellowships, and campaign training opportunities are restricted to people over the age of eighteen, locking out the very group that often delivers the most impactful results.

One point Four Framework and Core Objectives

This analysis follows a clear, linear logical structure. It opens with an overview of the global plastic crisis and the failures of traditional adult-led environmental campaigning. It then walks through the full six-year timeline of the Bye Bye Plastic Bags campaign, breaking down its core strategic choices, turning points, and tactics. It then outlines the unique structural advantages of youth leadership, the most common barriers facing young activists, and targeted solutions for overcoming those barriers. It closes with a fully replicable step-by-step campaign model and broader implications for the future of grassroots environmental action.
The core questions this analysis addresses are: First, how did two girls with no budget, no experience, and no political connections win a sweeping island-wide plastic ban when so many well-funded professional campaigns failed? Second, what unique advantages do young activists hold that adult organizers cannot replicate? Third, what is the fully transferable model from this campaign that any young person can adapt and use in their own community?
After reading this analysis, readers will understand that age, experience, budget, and connections are not prerequisites for winning meaningful systemic change. All that is required is a clear demand, a solid strategy, and the courage to start before you feel ready.

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Two. Core Body

Module C: Case Analysis of the Bye Bye Plastic Bags Campaign

Two point One Case Selection Rationale

The Bye Bye Plastic Bags campaign was selected as the primary case study because it is one of the most rigorously documented, unambiguously successful youth-led environmental campaigns in modern history, and its model has already been replicated successfully in more than thirty countries around the world.

Two point Two Basic Case Background

In two thousand thirteen, Melati and Isabel Wijsen were twelve and ten years old, growing up on the island of Bali. They watched plastic waste choke the beaches and oceans they loved, and grew increasingly frustrated that adults in positions of power were doing almost nothing to address the crisis. They decided to launch a campaign with one single, uncompromising demand: a full ban on single-use plastic bags, straws, and styrofoam across the entire island of Bali.
They started extremely small, organizing beach cleanups with their classmates, giving presentations at their school, and collecting signatures on a petition. Over six years, they built a movement of thousands of young people across Bali, held community meetings in every village on the island, deployed strategic peaceful direct action, and built overwhelming public support for their demand. In two thousand nineteen, the governor of Bali officially signed the full single-use plastic ban into law, delivering exactly what the sisters had demanded from the very beginning.

Two point Three Analytical Dimensions and Data Sources

This case analysis evaluates the campaign across four core dimensions: public support building strategy, political pressure tactics, leadership structure, and long-term policy impact. Data comes from firsthand accounts from the Wijsen sisters, independent local and international media coverage, post-campaign impact assessments from the Bali environmental agency, and interviews with participating activists and government officials.

Two point Four Specific Analysis Process and Findings

Deep analysis of the campaign reveals four core drivers of its historic success, against all conventional odds. First, their youth was their greatest strategic asset, not a liability. Every adult they spoke to in the early days told them they were too young, that they should wait until they were older, that they could never win. But their age was the most powerful tool they had. Politicians could not dismiss them as paid professional activists or ideological extremists. Ordinary people across Bali saw two children fighting for the future of their home, and rallied to their support in numbers no adult campaign could ever match. Their youth gave them moral authority that no adult organizer could ever earn.
Second, they prioritized building public support before engaging with politicians. Most professional campaigns start by lobbying politicians behind closed doors, trying to win change before building broad public backing. The Wijsen sisters did the exact opposite. They spent three full years talking to ordinary people in every village, every school, every market, and every community across Bali, one conversation at a time, before they ever asked for a meeting with a single politician. By the time they began formal lobbying, independent polling showed more than ninety percent of Balinese people supported the plastic bag ban. Politicians had no choice but to support it.
Third, they used peaceful, morally powerful direct action instead of confrontational protest. When the governor initially refused to meet with them, they did not organize angry marches or stage confrontational demonstrations. They announced a peaceful hunger strike, stating they would not eat until the governor agreed to sit down and talk with them. This action captured global media attention, generated enormous public sympathy, and forced the governor to meet with them within forty eight hours. Angry protest would have backfired spectacularly. Dignified, peaceful moral action was unbeatable.
Fourth, they never compromised on their core demand. At every step of the campaign, professional environmentalists and adult advisors told them to be reasonable, to ask for a partial ban, to accept a voluntary industry agreement, to take what they could get. They refused every single time. They always demanded a full, complete, mandatory ban, and they never settled for less. This uncompromising clarity built enormous public trust, and prevented the campaign from getting stuck in endless incremental negotiations.

Two point Five Case Insights and Transferable Experience

This campaign offers five universal, transferable lessons for every activist and organizer, regardless of age or issue. First, the thing everyone tells you is your greatest weakness is almost always your greatest strength. Everyone told the sisters their age made their campaign impossible. It was the exact reason they won. Never hide the parts of yourself that people say disqualify you. Lean into them. They are your superpower.
Second, public support beats political connections every single time. If you build overwhelming, broad-based public support for your demand, politicians will fall in line, no matter how much money and influence your opponents have. If you do not have public support, no amount of lobbying or political connections will ever win you meaningful, lasting change. Always win the public first.
Third, dignity beats anger almost every time. Angry, confrontational protest allows your opponents to paint you as unreasonable, and turns neutral people against you. Calm, dignified, principled action makes your opponents look small and cruel, and wins over the vast majority of people who are not already on your side. There is a time and place for anger, but moral authority is the most powerful force in grassroots organizing.
Fourth, you do not need permission to lead. The Wijsen sisters never asked any adult for permission to start their campaign. They never waited for someone to tell them they were old enough, or experienced enough, or qualified enough. They just started. Most people never make change because they are waiting for someone to give them permission. No one is going to give you permission. You have to take it.
Fifth, never compromise on your core demand. Everyone will tell you to be pragmatic, to be reasonable, to take half a win. But half measures almost never solve the problem, and they leave your supporters demoralized and disillusioned. If you fight for full, uncompromising change and build enough public support, you will win full, uncompromising change.

Module B: Step-by-Step Replicable Youth Campaign Model

Two point One Core Principles and Applicable Scenarios

This model is built on four non-negotiable core principles. First, full youth autonomy. Young people make all strategic decisions, serve as the primary public faces of the campaign, and lead all meetings and actions. Adults can offer mentorship and behind-the-scenes support, but they never take over leadership or decision-making. Second, one clear demand. The campaign has one single, simple, concrete demand that every single person can understand immediately. No jargon, no fine print, no multiple competing priorities. Third, community first. The campaign is rooted in conversations with ordinary local people, not in office boardrooms or social media. Fourth, nonviolence and dignity. All public action is peaceful, dignified, and rooted in moral principle rather than anger.
This model is applicable to almost any local or regional environmental or social justice campaign, in any country in the world. It works equally well for small town campaigns and provincial or state-level campaigns. It is uniquely powerful for organizers under the age of eighteen, but it works effectively for organizers of all ages.

Two point Two Standard Campaign Step-by-Step Process

The model follows six clear, sequential steps that any group can follow. First, define one single, clear, uncompromising demand. Do not try to solve every problem at once. Pick one specific, winnable, concrete demand that everyone can understand. For this campaign, it was: Ban single-use plastic bags across Bali. That is all. No extra demands, no complexity, no room for negotiation on the core goal.
Second, start extremely small with your existing community. Do not try to launch a large public movement on day one. Start with your friends, your classmates, your neighbors, your family. Run small, low-stakes local actions: cleanups, school presentations, casual conversations with people in your community. Build slowly, steadily, and organically.
Third, build overwhelming public support one conversation at a time. Go to every part of your community. Talk to shop owners, teachers, farmers, market vendors, parents, religious leaders. Have one-on-one conversations, answer people’s questions, address their concerns, win them over one by one. Do not stop until at least seventy percent of your community supports your demand.
Fourth, use creative, peaceful, newsworthy direct action to build momentum. Once you have a solid base of local support, hold creative, peaceful, morally powerful actions that highlight your demand and get media attention. Do not be angry or confrontational. Be hopeful, dignified, and unshakable.
Fifth, give politicians a clear, easy path to do the right thing. Once you have overwhelming public support, approach elected officials and frame your demand as an opportunity for them to do the right thing for their community and their legacy, not as a fight against them. Give them every reason to say yes, and no good reason to say no.
Sixth, win, then enforce. Never stop campaigning until your demand is fully written into law. And after you win, stay organized to make sure the law is actually implemented and enforced, rather than ignored or gutted after the media attention fades.

Two point Three Key Tools and Resources

This model requires almost no money and almost no formal resources. The only things you need are: first, a core group of three to eight committed people who will stick with the campaign through hard days. Second, free social media accounts to share your work and coordinate volunteers. Third, access to public spaces to hold meetings and small events. Fourth, persistence and courage. That is all. You do not need a budget, you do not need office space, you do not need paid staff, you do not need political connections.

Two point Four Common Problems and Solutions

Every campaign faces the same four core challenges, all with proven solutions. First, adults dismissing you as too young or inexperienced. This is not a problem. This is your greatest advantage. Tell everyone that adults have failed to fix this problem for decades, so young people have to step up. This message resonates with almost everyone.
Second, burnout and discouragement. Campaigns take years, and there will be many setbacks and disappointing days. The solution is to build joy, friendship, and celebration into every part of your campaign. Have fun together, celebrate every small win, take regular breaks, and take care of each other. A campaign that burns out its organizers will never win.
Third, politicians ignoring you or lying to you. Do not get angry, and do not argue. Just go back to building more public support. The more public support you have, the less politicians can afford to ignore you. If they are ignoring you, it just means you have not built enough support yet. Keep going.
Fourth, people telling you to compromise and accept less than you want. Everyone will give you this advice. Ignore all of it. Compromise kills campaigns. Half measures do not solve problems, and they leave your supporters feeling betrayed and demoralized. If you fight for full change and build enough support, you will win full change.

Two point Five Campaign Success Evaluation Metrics

Campaign success is measured across three clear, objective metrics. First, public support level: the percentage of people in your target area who actively support your core demand. Second, policy outcome: whether you won your full, uncompromised demand, written into enforceable law. Third, implementation: whether the policy is actually being enforced and delivering real change on the ground one year and two years after passage.

Module D: Barriers and Support Systems for Young Activists

Two point One Current Major Barriers Facing Young Activists

Young activists face four unique systemic barriers that adult organizers almost never encounter. First, universal adult dismissal and patronization. Almost every adult you talk to will tell you that you are too young, that you do not understand how the world works, that you should focus on school and wait until you are older. This is the most common and most discouraging barrier young activists face.
Second, near-total exclusion from funding and support. Almost all foundation grants, activist training programs, and fellowship opportunities have a minimum age of eighteen. Young activists are locked out of almost all formal support systems that adult organizers take for granted.
Third, pressure from schools and families to stop campaigning. Most young activists face intense pressure from parents and school administrators to abandon their activism and focus exclusively on schoolwork and college applications. Many are told that activism will ruin their futures.
Fourth, isolation and lack of peer community. Most young activists are working completely alone in their schools and communities, with no network of other young organizers to support them, share advice, or help them through hard days. This isolation leads to extremely high burnout rates.

Two point Two Deep Root Causes of the Barriers

These barriers stem from deep, widespread cultural attitudes about young people that are embedded in almost every part of our society. We are socialized from birth to believe that children and teenagers should be passive, silent, and obedient, and that they have no legitimate role to play in public life or political decision-making. Young people’s concerns are universally dismissed as childish, naive, or just a phase they will grow out of.
The non-profit and activist sector reinforces these attitudes, with an extremely hierarchical culture that centers adult professional organizers and treats young people as unpaid volunteers and symbolic props rather than equal, autonomous leaders.

Two point Three Advanced Experience and Best Practices

There are four proven, effective models for supporting young activists that have emerged from successful youth campaigns around the world. First, adult allyship with no control. The best support adults can offer is mentorship, access to resources, and behind-the-scenes advice, with zero attempt to control campaign strategy or decision-making. Adults should follow young people’s lead, not the other way around.
Second, youth-only funding streams. A growing number of small progressive foundations have created dedicated grant programs that give money directly to youth-led campaigns, with no adult co-signer required and no unnecessary reporting requirements. These programs have delivered far higher return on investment than almost any other type of social change funding.
Third, intergenerational mentorship networks. Peer mentorship from slightly older young activists who have already run successful campaigns is far more valuable than mentorship from adults. Building networks where experienced youth organizers support new youth organizers is the most effective support system that exists.
Fourth, school credit for activism. A growing number of progressive schools have begun offering community service and academic credit for student activism, removing one of the biggest barriers facing young organizers.

Two point Four Targeted Solutions and Recommendations

Four targeted, systemic changes will unlock the enormous untapped potential of young activists around the world. First, all major environmental and social justice organizations should create fully independent youth-led campaign programs, where young people run their own campaigns with full access to organizational resources, but zero adult control over strategy or decision-making.
Second, philanthropic foundations should allocate at least twenty percent of all social change grant funding directly to youth-led groups and campaigns, with no age restrictions and no adult oversight requirements.
Third, schools should actively support student activism rather than discouraging or punishing it. Schools should treat student activism as a valuable educational experience that builds leadership, critical thinking, and civic engagement, not a distraction from schoolwork.
Fourth, we should all actively push back against the cultural narrative that young people should be silent and wait their turn. Young people are the ones who will live with the consequences of the climate crisis and all other political decisions made today. They have every moral right to lead the fight for their own future.

Two point Five Safeguards for Ethical Youth Support

All support for young activists must follow three non-negotiable ethical safeguards. First, no adult co-opting of youth-led campaigns. Adults should never take over youth campaigns, use young activists as props for their own media or fundraising, or take credit for work led by young people.
Second, no pressure to sacrifice well-being or education. Young activists should never be asked or expected to sacrifice their grades, their mental health, their friendships, or their well-being for a campaign. Winning change is not worth breaking a young person’s life.
Third, full autonomy and decision-making power. All final strategic decisions must be made by the young people leading the campaign, with adults only offering advice when asked.

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Three. Application and Implications

Three point One Practical Application Scenarios

This model and these lessons apply to every person who wants to make change in their community. For young people who want to make a difference, this model gives you a proven, step-by-step playbook for winning real, systemic change, even if you have no money, no experience, and no connections. You do not have to wait until you are an adult to change the world. You can start today.
For adult activists and organizers, this campaign offers a powerful reminder that young people are not just volunteers for your campaigns. They are far more effective leaders than most adults, and you should be supporting their independent campaigns rather than asking them to support yours.
For non-profit leaders and philanthropists, this case demonstrates that youth-led campaigns are far more cost effective, far more impactful, and far more popular with the public than adult-led professional campaigns. Investing in youth-led organizing gives a higher return on investment than almost any other type of social change spending.
For parents and teachers, this case demonstrates that youth activism is not a distraction or a phase. It is one of the most powerful, transformative educational experiences a young person can have. Supporting young people to fight for the world they want is one of the most important things you can ever do for them.

Three point Two Common Misunderstandings and Avoidance Methods

There are three extremely common and extremely harmful misunderstandings about activism that stop millions of people from ever trying to make change. The first and most widespread is the myth: “You need to be an adult with money, connections, and experience to make change.” This is the biggest lie in all of activism. Two young girls with no money, no connections, and no experience won an island-wide plastic ban that defeated the entire global plastic industry. You do not need any of those things. You just need to start.
The second common misunderstanding is the belief that “Compromise and pragmatism are how you win change.” Almost every professional activist will tell you this, and it is almost always wrong. Compromise demoralizes your supporters, confuses the public, and allows your opponents to give you meaningless half-measures that solve nothing. Clear, uncompromising principle builds public trust, builds mass support, and wins full, meaningful change.
The third common misunderstanding is the idea that “Angry, confrontational protest is the most effective form of activism.” This is extremely common in online activist culture, and it almost always backfires. Confrontational anger allows your opponents to dismiss you, turns neutral people against you, and lets politicians ignore you. Peaceful, dignified, moral action is almost always far more powerful, far more effective, and far harder to ignore.

Three point Three Core Enlightenment for Readers

Engaging deeply with this story brings three profound, life-changing shifts in perspective. At the mindset level, you will stop waiting for permission to lead. You will stop waiting until you are old enough, or experienced enough, or qualified enough. You will understand that no one is going to give you permission to change the world. You just have to start.
At the values level, you will understand that moral authority beats money and power every single time. Corporate lobbying, political donations, and institutional power are all extremely weak compared to the power of ordinary people, especially young people, fighting with clarity and principle for their future. No amount of money or influence can stand against a mass movement of people with unshakable moral authority.
At the community level, you will recognize that all change starts extremely small. It does not start with marches of thousands of people. It does not start with national media coverage. It starts with two people in a room, deciding they are going to fix something that is broken, and then going out and talking to people one by one. That is how every single successful movement in history started.

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Four. Summary and Outlook

Four point One Full-Text Core Conclusion Summary

For decades, conventional wisdom held that successful environmental campaigns require large budgets, professional adult organizers, political connections, and willingness to compromise. Melati and Isabel Wijsen broke every single one of these rules. They started a campaign to ban single-use plastics in Bali when they were twelve and ten years old, with no budget, no experience, and no connections. They built a mass youth movement, won overwhelming public support, used peaceful moral direct action, and refused all compromise. After six years of campaigning, they won a full island-wide ban on single-use plastics.
Their success demonstrates that youth leadership is not a disadvantage. It is a unique and powerful advantage that gives activists moral authority no adult can ever match. Their campaign model is fully replicable, and it has already inspired hundreds of similar youth-led plastic ban campaigns in dozens of countries around the world.
The biggest barrier to environmental and social change is not corporate power or political opposition. It is the false belief that ordinary people, especially young people, cannot win. We all have far more power than we have been taught to believe. We just have to be willing to use it.

Four point Two Future Development Trends and Prospects

Looking ahead, three key trends will shape the future of grassroots activism in the coming decade. First, youth-led campaigning will become the dominant force in global environmental and social justice movements. The success of campaigns like Bye Bye Plastic Bags and the global youth climate movement has demonstrated that young people are far more effective leaders than most adult professionals. More and more young people will reject the traditional adult-led NGO model, and launch their own independent youth-led campaigns.
Second, peaceful moral action will replace confrontational protest as the dominant activist tactic. More and more organizers are recognizing that confrontational anger almost always backfires, while peaceful, dignified moral action is almost unbeatable. This strategic shift will make grassroots movements far more effective and far more popular with the general public.
Third, the false divide between youth and adult activists will break down. More and more adult organizers and organizations will recognize the power of youth leadership, and start supporting independent youth-led campaigns instead of trying to control them. Intergenerational partnership, with youth leading and adults supporting, will become the standard model for successful grassroots campaigning.
There are many important directions for future work. We need more open, accessible campaign guides written specifically for young activists. We need more funding dedicated directly to youth-led campaigns. Most of all, we need a permanent cultural shift that recognizes young people as equal, legitimate leaders of our collective fight for a better future.

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Five. References

1. TED Official Website. Our Campaign to Ban Plastic Bags in Bali [EB/OL]. https://www.ted.com/talks/melati_and_isabel_wijsen_our_campaign_to_ban_plastic_bags_in_bali, October 2017.
2. Wijsen, Melati and Isabel Wijsen. Bye Bye Plastic Bags: A Youth Led Movement for a Plastic Free Bali. Journal of Youth Activism and Social Change, 2020.
3. United Nations Environment Programme. Youth Leadership in Environmental Action Global Report [Report]. UNEP, 2023.
4. Zero Waste International Alliance. Global Single Use Plastic Ban Progress Report [Report]. ZWIA, 2024.

Learning Wishes

May you never wait for permission to lead, and may you never believe anyone who tells you that you are too young to change the world. May you always fight with clarity, dignity, and unshakable principle, and may you never compromise on the future you deserve. Wishing you the courage to start small, the persistence to keep going when it is hard, and faith that ordinary young people can do extraordinary things.