Anti-capitalist protesters push a mobile sound system rigged up to look like a house during a May day anti-gentrification protest. The sound system, which had the slogan "affordable Housing" painted on its roof, referenced the theme of the march - anti-gentrification and affordable housing - and was dragged through the streets from Aldgate in the east to a squatted building in Soho's Frith Street in the West End. London, 1st May 2015