Slave Labour by British graffiti artist Banksy. Photo: EPA

Controversial 'Slave Labour' mural by Banksy up for sale again

A work by renowned British graffiti artist Banksy that was withdrawn from a controversial US auction is being put up for sale again in London. The mural, called Slave Labour, mysteriously vanished from its original site on a wall in north London in February before appearing on an auction list in Miami later that month.