Greta Thunberg Released on Bail After Arrest at London Pro-Palestinian Protest

Swedish climate activist Greta Thunberg, 22, was released on bail on Tuesday after being arrested in London during a pro-Palestinian demonstration, police confirmed. She is scheduled to return to authorities in March 2026.

Thunberg was reportedly arrested under the UK Terrorism Act for holding a sign that read, “I support the Palestine Action prisoners. I oppose genocide”. The British government has designated Palestine Action as a proscribed terrorist organisation.

City of London Police stated that the arrest followed earlier incidents at the same protest, including two people detained for throwing red paint at a building. A spokesperson noted that a 22-year-old woman—later identified as Thunberg—was taken into custody for displaying a placard in support of a proscribed organisation.

The demonstration targeted a building used by an insurance firm, according to Prisoners for Palestine, a UK-based campaign group that advocates for activists who have been detained. The group alleged that the firm provided services to the British branch of Israeli defence company Elbit Systems. The insurance company has not yet commented on the incident.

Thunberg first rose to international prominence in 2018 with weekly climate protests outside the Swedish parliament. Last year, she was cleared of a public order offence in the UK after a judge ruled that police lacked the authority to arrest her at a London protest the previous year.

The activist has also been involved in international advocacy for Palestinian rights. In October 2025, she was detained along with 478 others and expelled from Israel after attempting to deliver aid to Gaza via the Global Sumud Flotilla. Israel has consistently denied allegations of genocide in the region.

Thunberg’s arrest has sparked renewed debate over the boundaries of peaceful protest in the UK, particularly when connected to proscribed organisations.