Alexandre Orion is an artist working out of São Paulo, Brazil. His latest intervention was to clean grime from a local traffic tunnel. He scraped and cleansed the tunnel into a large mural of skulls. An anti-pollution statement that was both relevent and beautiful.
The local police were baffled. They wished to charge the artist, however selective cleaning is not a crime. Instead the city opted to clean the portion of the tunnel on which the artist had left his mark. Orion was not to be thwarted that easily as he immediately began work on the other side of the tunnel. The city then responded by removing all grime from the tunnel and subsequently every tunnel in São Paulo.