The east side of the square, lying opposite one of the key entrances to the Palace of Westminster, has historically been a common site of protest against government action or inaction. On May Day 2000 the square was transformed into a giant allotment by a Reclaim the Streets guerrilla gardening action. Most recently, Brian Haw staged a continual protest there for several years, campaigning against British and American action in Iraq. Starting on 2 June 2001, Haw left his post only once, on 10 May 2004 – and then because he had been arrested on the charge of failing to leave the area during a security alert, and returned the following day when he was released. The disruption that Haw's protest is alleged to have caused led Parliament to insert a clause into the Serious Organised Crime and Police Act 2005 making it illegal to have protests in Parliament Square (or, indeed, in a large area reaching roughly half a mile in all directions) without first seeking the permission of the Metropolitan Police Commissioner.