I try to take photos of graffiti whenever I find it. Not because I support defacing property, but more because I think some street artists are amazingly talented and once a piece of graffiti art is on the street long enough it begins to morph and change with additions and tags until it is gone forever. If I could get all street artists to paint on canvas and sell their work I would, but I also know that is not the way it always works.
Recently in London I was in the Shoreditch neighborhood and had a field day with my camera. I even found a couple of ROA pieces that hadn’t been ruined yet.