In the UK, four protesters have been arrested after food was thrown at a display case containing the Crown Jewels in the Tower of London.
Take Back Power, which describes itself as a new non-violent civil-resistance group, claimed it was behind the act.
It said custard and apple crumble was flung at the case, which contained the priceless Imperial State Crown.
The Metropolitan Police said: "Four protestors have been arrested following criminal damage at the Tower of London.
"Police were called at 09.48hrs on Saturday December 6 to the Tower of London following reports of criminal damage to a display case, containing the State Crown.
"It was reported that four protesters threw suspected food onto the case before two left the scene.
"Officers worked closely with City of London Police and security officers and four people have been arrested on suspicion of criminal damage. They have taken into custody."
Watch: Protest group posts video showing dessert being thrown at Crown Jewels
‼️ CRUMBLE AND CUSTARD ON THE CROWN JEWELS
— Take back POWER (@takeback_power) December 6, 2025
Democracy has crumbled. Billionaires buy political influence whilst homeless people die on the streets.
We need a House of the People to tax the rich.
Donate to help take back power: https://t.co/fMDX5SNEKg pic.twitter.com/Tl7Wyfakvd
The Tower of London has been closed to the public while the police investigation continues.
Take Back Power said it carried out the stunt to demand the UK government establishes a permanent citizen's assembly - a "House of the People" - with the power to "tax extreme wealth and fix Britain".
Footage shared by the group showed one demonstrator removing the large foil tray of crumble from a bag and then slamming it against the glass protecting the Imperial State Crown.
Another repeatedly poured a tub of bright yellow custard on the front of the case.
The demonstrators then opened their coats to show their T-shirt slogans which read "Take Back Power" before one shouted "Democracy has crumbled" and another shouted "Britain is broken. We've come here to the jewels of the nation to take back power".
Surprised tourists could be seen reacting to the stunt, while a Tower of London worked approached saying: "Excuse me, excuse me", as she radioed for help.
The Metropolitan Police later said only the Jewel House at the Tower had been closed to the public while investigations continued.
