LONDON, UNITED KINGDOM – 11.03.12. Anti-skateboarding devices near Bankside on Sunday 11 March 2012 in London, England. Anti-skateboarding devices are deployed by private corporations and local authorities. The aim is to reshape individual and group behavior and discourage skateboarders from using a particular public or semi public space. (Photos by Marc Vallée/marcvallee.co.uk) (c) Marc Vallée, 2012. All rights reserved.