Wall graffiti is something teenagers like to do because they like to express themselves. They are creative, go and find a place where no one can see them, and do unsupervised art. All types of people do wall graffiti and there are many types of graffiti art. The work is sometimes deemed illegal because it is done on public property. I like the idea of people doing graffiti art on walls, because it is done on abandonned empty spaces that are perfect to experiment new style. Wall graffiti is the first step to show off your skill and to test your talent.