An app dedicated to the history of Graffiti and Street Art. The history of subway graffiti in New York is a brief one, and the phenomenon differs from all other kinds of graffiti, both past and present. In the 1960s, teenagers in New York began to write their names on neighborhood walls, but instead of their given names, they chose nicknames, creating a public identity for the street. Name graffiti initially had a territorial function. Gang members marked out their turf and local kids wrote for their friends or for their enemies.