This has little to do with the books that I usually post here, but I had to include this information on "guerilla art" in case you are not familiar with it. I just discovered it, although it's been around for a while, the result of a sleepless night when I was looking for something interesting on TV--not easy, but of course PBS provided it.
So, to find out more about "guerilla art," check these links:
Jellyfish art float exhibit at the Tate Modern, London
There is also an article in The Guardian about the exhibit, by artist Anicka Yi who would like viewers to consider what it would feel like to share the world with creatures from the beginning of evolution. She has been classified as a "guerilla" artist.