Swedish climate and human rights activist Greta Thunberg was arrested in central London on December 23 after joining a pro-Palestinian demonstration organized by Palestine Action. The protest took place outside Aspen Insurance’s office, where Thunberg was seen holding a placard expressing solidarity with imprisoned activists and opposing what she described as genocide.

London City Police confirmed that a 22-year-old woman was detained for displaying material supporting a banned organization, though they did not name Thunberg directly. The UK government outlawed Palestine Action in July 2025, citing its involvement in disruptive protests targeting companies linked to Israel. Since the ban, hundreds of demonstrators have reportedly been arrested under similar charges.

Thunberg’s detention adds to her growing record of civil disobedience in environmental and human rights causes. The incident is expected to reignite debate over the UK’s protest laws and their impact on freedom of expression, especially in politically sensitive contexts involving international conflicts.