Shepard Fairey is one of the worlds most prolific and respected street artists. His remarkable journey has covered much of the worlds urban landscape and has culminated in a Barack Obama piece endorsed by the man himself. Obey is the vehicle for his clothing output, the brand goes from strength to strength, and this season's Public Enemy project is awesome. Check out 'Supply and Demand', the hardback book on sale here, dedicated to Shepard's art.