Today in Pictures: March 4, 2013

A mural by the street artist Banksy which has been defaced by blue paint bombs is seen on the side of a building in Park Street, March 4, 2013 in Bristol, England. The Twentieth Century Society has launched a campaign to try and save some of the UK's best known post-war murals which like much of the early artwork of graffiti artist Banksy has been destroyed, defaced or just left to deteriorate. (Matt Cardy/Getty Images)