Before Banksy, Shepard Fairey and Cartrain, there were graffiti pioneers who were responsible for the evolution of street art. Conceived and directed by Roger Gastman, Wall Writers: Graffiti in Its Innocence is a documentary film that explores street art’s eruption into the mainstream. The film offers an interesting look into the place of graffiti in popular culture through never-before-seen photographs, archival footage and exclusive interviews with graffiti’s originators, journalists, historians and politicians who bore witness to the wall-writing revolution. Narrated by legendary filmmaker John Waters, you can find the film and accompanying book available for pre-order here now.