After having heard the title of the documentary "The Subconscious Art of Graffiti Removal" somebody I know said "Nothing that destroys art can be considered art". Now, isn't urban scape also a form of art that is being destroyed by graffiti? I believe there are a lot of architects, designers and engineers working on creating things that look good. Then why is graffiti considered a form of art if it destroys what is already art?