On this day in 2003, an estimated million-plus people marched in London in protest at Britain going to war in Iraq. It remains the largest protest march in UK history. | On This Day

Jeremy Corbyn was right to warn in 2003 that war on Iraq would "set off a spiral of conflict, of hate, of misery, of desperation, that will fuel the wars, the conflict, the terrorism, the depression, and the misery of future generations." Our party needs to continue to be a key part of the global movement for peace and against war. | Richard Burgon