Not so simple. The movie owes a lot to the autobiographical story of Eminem, but also has many echoes: of "American Graffiti," and "Blue Collar," and "Undisputed," and "Good Will Hunting," and ...
So check out "An art of their own" and decide for yourself whether graffiti has worth as art. In the meantime, I think I'll give Eminem another try. "I just wanna be there for you and you to be there ...