Green Works | Reverse Graffiti

This is a cool little documentary about a "reverse graffiti" artist. Basically, rather than spraying art on the sides of onramps, trains, tunnels, etc., a reverse graffiti artist cleans off the grime, using the negative space as the art. This video was produced by Green Works. I bet even this civic benefit pisses off some people, which makes a great statement on its own. (btw, this picture is of some reverse graffiti in a tunnel in Sao Paulo, not from the artist working in San Francisco featured in the video.)