It's not just a crack on the wall. "Find the cracks and exploit the discoveries to be revealed there . then move on to practice running headlong into the brick walls. Cracks crack first. Heads crack before brick walls. (from: STREET ART UTOPIA)"
106 of the most beloved Street Art Photos - Year 2012 - Street Art Utopia
Banksy, one of the most infamous street artist ever. Banksy is a pseudonymous England-based graffiti artist, political activist, film director, and painter. His satirical street art and subversive epigrams combine dark humour with graffiti done in a distinctive stencilling technique. - See more at: http://geekshizzle.com/2013/07/05/complete-banksy-art-infographic/#sthash.SeDNSnm2.dpuf
Street Art - Saw his clever work all over Firenze. If it makes people pay more attention to street signs, than I say, why not give him a public works grant! Clet-Abraham_Street-art_stickers-on-traffic-signs_multi_collabcubed