Discover the evolution of graffiti art, from underground subways to professional movie set design. We explore the careers of backdrop painters and the influence of seminal works like 'Subway Art' on global youth. #GraffitiArt #StreetArt #SubwayArt #ArtHistory #MovieSets #HenryChalfant #MarthaCooper #JimPrigoff #UrbanArt #ArtDocumentary