Next: A Primer on Urban Painting

Discover how a young urban underground art movement of the 70s became an art gallery favourite and still kept its soul. Meet graffiti artists from across Europe, Japan and North America, and trace back the international language of geometric shapes, bold swirls and colours and figurative messages to local roots. This is an art form continuing to evole. Is graffiti the abstract expressive art of our time? This fascinating and definitive documentary combines a huge rangeof images and interviews - with artists, gallery owners and passers by - and leaves the answer up to you.