Why was Greta Thunberg arrested at London pro-Palestine rally?

Greta Thunberg has always been that voice cutting through the noise, as a fearless, young, and unapologetic activist. She has spearheaded them all - from school strikes on climate to global stages, she's challenged the powerful, causing both cheers and backlash.

Recently, her path crossed into even stormier waters, in a tense London morning, cameras caught her in the fray, placard in hand, as police moved in and arrested her in December 2025.

Why was Greta Thunberg arrested?

Swedish climate activist Greta Thunberg was detained in central London during a pro-Palestinian rally on December 23, 2025, outside Aspen Insurance offices. The rally backed "Prisoners for Palestine," targeting the firm's alleged ties to Israel's Elbit Systems, according to Aljazeera news.


Videos showed Thunberg with a sign saying “I support the Palestine Action prisoners. I oppose genocide” before her arrest around 7 a.m., amid earlier vandalism like red paint and hammers on the building.

According to A BBC report, a 22-year-old woman was held for "displaying an item, a placard in support of a Palestine, contrary to Section 13 of the Terrorism Act 2000."

Where and why the protest happened

The rally, called "Prisoners for Palestine," took place outside Aspen Insurance offices in central London. Organizers targeted the firm due to its reported connections to Elbit Systems, an Israeli defense company activists criticise for providing military gear.


Social media videos captured Thunberg with a sign stating: “I support the Palestine Action prisoners. I oppose genocide.” Police then detained her during the larger action.

Police statement on the arrest

A City of London Police spokesperson said a 22-year-old woman was arrested around 7 a.m., following earlier arrests for building damage with red paint and hammers.

She was held for showing support for a banned group, violating Section 13 of the Terrorism Act 2000. Other protesters faced separate charges for criminal damage from earlier incidents.

Thunberg recieved immense support from fans and activists

Fans and activists voiced strong support online after her detention. They claim she was peacefully protesting to highlight key humanitarian concerns.
Many question if anti-terror laws unfairly target someone holding a signboard, threatening free speech and assembly rights.

What has been the impact on the UK police and protest rules

Police in the UK have gotten stricter on rallies tied to banned or extreme groups lately. Using the Terrorism Act 2000 against supporters of proscribed organisations worries legal experts and rights defenders.