Street Art is by far the most controversial art form of our times. It takes place in the street, far away from galleries and at the verge of legality. Nevertheless or maybe because of this, it fascinates and is developing into an art form that increasingly gains acceptance. The sprayed or glued pictures that can be found primarily in big cities on house walls and rail cars are anonymous, provocative, and non-academic. They often, but not always, pick up political protest and sometimes are part of an attempt to bring poetry to the city. This book shows the graffiti's scope of expression in over 250 pictures and explanatory texts. Extra pages illuminate special aspects such as name graffiti, hip hop, or street art vs. globalization. An ideal opus for people who want to learn more about this elementary and controversial art form.