It seems that someone in my neighborhood doesn't care for wall art that expresses anti-authoritarian themes. A couple of pieces that I like have been vandalized recently by someone throwing paint over them. I wonder if there's anything significant in the observation that what you might call the counter-culture expresses itself through carefully-created and often witty pieces of art, while the counter-counter-culture expresses itself with pots of paint hurled from a distance. Just saying.
Anyway, for your enjoyment, here are the pieces as they were before they were defaced.