Vandalism is wrong. We certainly can't condone it—broken windows, gang graffiti, or trashing property that isn't yours is costly and a nuisance for those who are left to clean it up. However, vandalism doesn't always have to be bad, and that's exactly what these photos are out to prove. The instances of vandalism on this list are technically illegal, but what's done is done, and there's nothing left for us to do except for sit back and enjoy it with a good laugh. Some of the vandals' work on this list is so good or creative that it's become an iconic piece of street art in their communities.Spray painted tags are boring, but adding a bumper sticker to, say, a STOP sign can be a fun way to liven up the neighborhood. (Don't do that; it's so obnoxious / hilarious.) This gallery includes pictures of funny ways artists vandalized their surroundings, including well-thought-out street art and other installations made with everything from Sharpie markers to paper. The vandals and rapscallions on here have changed their canvasses for the better. Vote up your favorites, and don't copy them. That would be wrong.