Check out this great trailer for the upcoming indie documentary by Roger Gastman titled Wall Writers: Graffiti In It’s Innocence, which chronicles the beginning stages of graf in the city and how it spawned into a multi-million dollar a year industry.

Gastman got graf pioneers like Taki 183, Cornbread, Coco 144, Snake 1 and Phil T Greek to share their experiences on how things developed and ultimately paved the way for the ‘street artists’ of today such as Banksy and Shepard Fairey.

The film is in its final stages and a date for release should be set soon.