Climate Activism

Fifteen-year-old Greta Thunberg began skipping school to sit outside the Swedish parliament with a sign reading "Skolstrejk för klimatet" (School strike for the climate). Her solo protest inspired a global movement, Fridays for Future, with millions of students participating in climate strikes worldwide. Thunberg became the face of youth climate activism, addressing the UN and being named Time's Person of the Year in 2019.

Extinction Rebellion (XR) launched its first major action in London, blocking bridges and demanding the UK government declare a climate emergency. XR's tactics of nonviolent civil disobedience — mass arrests, road blockades, and disruption of daily life — inspired chapters worldwide. The movement demanded net-zero emissions by 2025 and citizens' assemblies on climate. The UK parliament declared a climate emergency in May 2019, the first national government to do so.

An estimated 4 million people across 161 countries participated in the Global Climate Strike, timed ahead of the UN Climate Action Summit. It was one of the largest coordinated climate protests in history. The strike demonstrated the movement's global reach but also raised questions about whether mass protests could translate into policy change. Critics noted that the movement's demands were often vague or unrealistic.

Just Stop Oil (JSO) was founded as a direct action group demanding the UK government halt all new fossil fuel licensing and production. JSO's tactics escalated beyond XR's, including blocking roads, scaling bridges, and vandalizing art and cultural institutions. The group argued that disruption was necessary to force government action. Critics accused the group of alienating public support and causing harm to ordinary people.

Two Just Stop Oil activists threw tomato soup at Vincent van Gogh's "Sunflowers" painting at the National Gallery in London. The painting, protected by glass, was unharmed, but the protest went viral and became one of the movement's most recognizable actions. The stunt intensified debate about the effectiveness and ethics of targeting cultural heritage, with critics arguing it discredited the movement while supporters said it drew attention to the climate emergency.

Governments increasingly criminalized climate activism. The UK passed the Public Order Act, expanding police powers to stop protests. Just Stop Oil activists received multi-year prison sentences. In Germany, Last Generation activists faced treason investigations. In the U.S., pipeline protesters faced felony charges under state "critical infrastructure" laws. Critics warned of democratic backsliding; governments cited public disruption and economic harm.

Climate activism contributed to policy changes including the UK's net-zero target, the EU's Green Deal, and increased climate ambition in several countries. However, the movement also faced criticism for unrealistic demands, alienating the public through disruptive tactics, and failing to build broad-based political coalitions. The debate over the most effective strategy for climate action — insider lobbying, electoral politics, or direct action — remained unresolved.

Just Stop Oil announced it would "hang up the hi-vis" and end its campaign of direct disruptive actions. The group stated it would shift to a new strategy, acknowledging that mass protest had reached its limits. The announcement prompted reflection on the climate activism movement's achievements and failures. Extinction Rebellion had similarly shifted focus, moving toward mass mobilization rather than disruption. The broader movement continued through other channels.

On August 31, 2026, a federal judge in Syracuse ruled that New York could not enforce its 2024 Climate Change Superfund Act, the first-in-the-nation law requiring major fossil fuel companies to pay 75 billion dollars over 25 years for climate adaptation infrastructure, apportioned by their emissions from 2000 to 2018. The law, a landmark of the 'polluter pays' climate advocacy strategy, was challenged by a coalition of energy companies and Republican-led states, which argued it was unconstitutional and punished lawful past conduct. Environmental groups decried the ruling as a setback for climate accountability, while industry and opposing attorneys general celebrated it as a defense of affordable energy and constitutional limits. The decision signaled growing judicial resistance to state-level climate cost-recovery laws championed by the movement.

Three days before the Dutch cabinet presented its annual budget, tens of thousands of people -- organisers said more than 40,000 -- marched through Amsterdam in the Klimaatmars (Climate March), organised by the Klimaatcrisis Coalitie, an alliance of Greenpeace, Milieudefensie, Extinction Rebellion and roughly 200 other groups. The 2.5-kilometre route ran from Dam Square to Museumplein under the slogan of breaking free from fossil-fuel dependence. The march followed an exceptionally hot and dry summer across Europe and reflected a broader post-Just Stop Oil shift in the movement toward broad-coalition mass mobilisation rather than small-scale disruptive actions.