Londoners marched through the downtown core on Monday in protest of Israel's escalating military offensive in Gaza, and the deaths of six Palestinian journalists from an Israeli airstrike over the weekend.

London police said Sunday that 532 people were arrested the previous day when supporters of a pro-Palestinian group that was recently outlawed as a terrorist organization intentionally broke the law.

British police said they arrested 365 people in central London on Saturday as supporters of a recently banned pro-Palestinian group intentionally defied the law as part of their effort to force the government to reconsider the ban.