Protesters simultaneously unveiled signs with the same message "I oppose genocide. I support Palestine Action" in Westminster's Parliament Square.

London's Metropolitan Police arrested more than 466 people at a protest on Saturday against Britain's decision to ban the group Palestine Action, the force said. British lawmakers banned Palestine Action under anti-terrorism legislation in July after some of its members broke into a Royal Air Force base and damaged planes as part of a series of protests.

British police said they arrested 365 people in central London as supporters of a recently banned pro-Palestinian group intentionally flouted the law as part of their effort to force the