Graffiti Assignment

I found these at the art and design building in a stairwell. There seems to be some tags as you can see in the bottom left two pictures. this would indicate that these graffitti have been someone who has legitimate street cred or is recognizable to people who know graffiti. However, taking into account the location of the graffiti as being the art building, we might be tempted to think that the graffiti is an art project. Thus this graffiti in particular plays with the notions of graffiti as vandalism or being illegal and what constitutes art. Perhaps it is both, so that while the graffiti artist did not mean for his art to be taken a certain way its merit was recognized by the viewers and preserved