Street Art News rounded up the 10 most popular murals that it published during September. My favorite is this one by the famous and mysterious Banksy. You can find this stencil work in Los Angeles. It's a part of his upcoming "Better out Than in" show in October.
Some people think that street artists are just vandals. Some, by definition, are: they put their art on other people's property without permission. One of our regular commenters (Ted, I think) used to express this point occasionally. I don't know if that's the case with this work. But I think that Banksy is saying that street artists bring beauty into the world with their spay paint cans.