Police have arrested 474 people at a demonstration in London in support of banned group Palestine Action.
The Metropolitan Police said 466 protesters were arrested for supporting the group, five for assaults on police officers, two for public order offences, and one for a racially aggravated offence.
Scores of people simultaneously unveiled handwritten signs with the message "I oppose genocide. I support Palestine Action" at the protest, organised by Defend Our Juries at Westminster's Parliament Square.
The government proscribed the group in July under the Terrorism Act of 2000, making membership of or support for it a criminal offence, punishable by up to 14 years in prison.
No officers were seriously injured, and the Met Police said the number of arrests was the largest made by the force on a single day in the last 10 years.