In this photo illustration a man uses an app on his iPhone to look... Nieuwsfoto'sApple Computers,Applicatie,Banksy,Bestof,Blauw,Bouwwerk,Bristol - Engeland,Communicatie,Draadloze technologie,Draagbare informatie-apparatuur,Engeland,Fotoberichten,Fotograferen,Fotografie,Fotografische Thema's,Gebouw exterieur,Graffiti,Groot-Brittannië,Horizontaal,Human interest,Illustratie,Illustratietechniek,Kunst Cultuur en Vermaak,Kunstenaar,Mannen,Mobiele telefoon,Moderne kunst,Muurschildering,Smartphone,Springstof,Stad,Techniek,Thema,Volwassen,Wetenschap en Techniek,iPhonePhotographer Collection: Getty Images News 2013 Getty ImagesBRISTOL, ENGLAND - MARCH 04: In this photo illustration a man uses an app on his iPhone to look atbuildiong Extr 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 on 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. (Photo by Matt Cardy/Getty Images)