Swedish climate activist Greta Thunberg was arrested Tuesday morning in central London after displaying a placard in support of Palestine Action, a group recently designated as a terrorist organization under United Kingdom law, as reported [1] by Breitbart.
The arrest occurred during a protest outside the central London offices of Aspen Insurance on Fenchurch Street.
Thunberg, 22, was part of a larger demonstration organized by activists backing Palestine Action and individuals described as “Palestine Action prisoners.”
Video footage shared by the Prisoners for Palestine protest group shows Thunberg holding a sign reading, “I support the Palestine Action prisoners. I oppose genocide.”
The footage also shows other demonstrators gathered outside the building during the early morning hours.
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 [2]
— Prisoners For Palestine (@Prisoners4Pal) December 23, 2025 [3]
According to authorities, two activists vandalized the Aspen Insurance building before police arrived. Red paint was sprayed across the front of the structure, and hammers were reportedly used to cause damage.
A spokesperson for the City of London Police confirmed details of the incident during an interview with LBC.
“At around 7am this morning, hammers and red paint were used to damage a building on Fenchurch Street,” the spokesperson said.
“A man and a woman have been arrested on suspicion of criminal damage. They glued themselves nearby and specialist officers are working to release them and bring them into police custody.”
The spokesperson added that Thunberg arrived at the scene later.
“A little while later, a 22-year-old woman also attended the scene,” the spokesperson said.
“She has been arrested for displaying an item (in this case a placard) in support of a proscribed organisation (in this case Palestine Action) contrary to Section 13 of the Terrorism Act 2000.”
Under Section 13 of the Terrorism Act 2000, it is a criminal offense in the United Kingdom to display articles or express support for an organization that has been formally proscribed by the government.
The UK government formally designated Palestine Action as a terrorist organization in July.
Police Arrest ‘Palestine Action’ Protesters Following Ban as Terrorist Group by British Governmenthttps://t.co/AS0Ou2iEgO [4]
— Breitbart London (@BreitbartLondon) July 5, 2025 [5]
The designation followed a series of vandalism incidents attributed to the group, including damage to two aircraft at a Royal Air Force base.
UK officials estimated the damage from that incident at approximately £7 million, or about $10 million.
Tuesday’s arrests follow a similar law enforcement response to earlier demonstrations involving Palestine Action supporters, according to previous reporting by Breitbart London.
Thunberg was also present at a separate pro-Palestinian protest in central London the night before her arrest. Video from that demonstration shows her shouting: “We support the hunger strikers.”
UK to Ban Jet-Sabotaging ‘Palestine Action’ Group as a Proscribed Terrorist Organisationhttps://t.co/EF7qFzUtac [6]
— Breitbart London (@BreitbartLondon) June 23, 2025 [7]
In a video posted to her Instagram account, Thunberg criticized the British government’s handling of the situation.
“We are witnessing with pure and utter disgust how the UK government is handling this situation,” she said.
Police have not yet released additional details regarding potential charges or court dates related to the arrests. Authorities said the investigation into the vandalism and related protest activity remains ongoing.