Greta Thunberg Arrested at U.K. Protest Supporting Palestine Action Prisoners

The Swedish activist Greta Thunberg was arrested after holding a sign that the police said showed support for the group, which Britain banned this year.The Swedish activist Greta Thunberg last month in Rome at a demonstration in solidarity with Gazans.Credit...Remo Casilli/ReutersDec. 23, 2025, 8:34 a.m. ETThe Swedish activist Greta Thunberg was arrested on Tuesday under terrorism laws in Britain for holding a placard that the police said showed support for the banned group Palestine Action, her lawyer and organizers of the protest said.Ms. Thunberg, 22, joined a protest in London’s financial district on Tuesday morning that opposed the treatment of people being held in prisons before trials relating to Palestine Action activities, most for property damage at Israel-linked weapon firms. Several of those being held have gone on hunger strike.Video released by the protest organizers, a separate group called Prisoners for Palestine, showed Ms. Thunberg sitting on a sidewalk holding a handwritten sign reading, “I support Palestine Action prisoners. I oppose genocide.” The video shows a police officer asking her to stand up and taking the sign. As protesters shout “Free, free Palestine,” a person is heard heckling off camera, saying, “Take the terrorist away.”BREAKING: Greta Thunberg arrested under the Terrorism Act for holding a sign which says "I support Palestine Action prisoners. I oppose genocide"She was detained at the Prisoners for Palestine action at Aspen Insurance in London, insurers for Israeli weapons firm Elbit Systems. pic.twitter.com/3qBt3iRi9e— Prisoners For Palestine (@Prisoners4Pal) December 23, 2025 In a statement, the City of London Police said that a 22-year-old woman had been arrested “for displaying an item (in this case a placard) in support of a proscribed organization (in this case Palestine Action) contrary to Section 13 of the Terrorism Act 2000.” The statement did not name Ms. Thunberg, in accordance with rules barring British police from identifying suspects before they are charged.In a statement, Raj Chada, a lawyer representing Ms. Thunberg, said: “Our client has been arrested under the U.K.’s farcical terror laws. The U.K.’s global reputation for human rights is in tatters whilst these laws remain in place.”Ms. Thunberg gained global recognition for her environmental activism as a teenager. This year, she joined a flotilla that tried to deliver aid by sea to Gaza but was intercepted by the Israeli authorities. She has voiced support for Britain’s Prisoners for Palestine group on her Instagram page.Ms. Thunberg was arrested under a law that has been used to arrest more than 2,000 people since Palestine Action was banned as a terrorist group in July. The law makes it a crime to wear, carry or display items that “arouse reasonable suspicion” of support for banned organizations and can be punished with up to six months in prison. Most of the arrests have been for holding signs with the phrase “I oppose genocide. I support Palestine Action.”Palestine Action is the first organization to have been declared a terrorist group under part of Britain’s legal definition of terrorism that covers “serious damage to property” for a political cause, rather than violence against people.The Palestine Action ban is being challenged by its co-founder at the High Court in London as unlawful and disproportionate.The group had used property damage, particularly spraying red paint, as a tactic in protests that mainly targeted subsidiaries of the Israeli weapon manufacturer Elbit Systems and other companies that the group accused of links to the Gaza conflict.Tuesday’s protest was held outside the offices of an insurance company in the City of London, the financial district. Protest organizers said the company had provided services to Elbit Systems U.K.In a statement, the City of London Police said the demonstration started about 7 a.m. on Tuesday, when protesters used hammers and red paint to damage the building. Aside from Ms. Thunberg, a man and a woman were arrested on suspicion of criminal damage.SKIP