Graffiti was used primarily by political activists to make statements and street gangs to mark territory. It wasn't till the late 1960s that writing's current identity started to form.The history of the underground art movement known by many names, most commonly termed graffiti begins in Philadelphia, Pennsylvania during the mid to late '60s and is rooted in bombing. The writers who are credited with the first conscious bombing effort are CORNBREAD and COOL EARL. They wrote their names all over the city gaining attention from the community and local press. It is unclear whether this concept made its way to New York City via deliberate efforts or if was a spontaneous occurrence.