Stories on a Wall

Graffiti is basically a story on a wall. You can't help but to look at it because every seperate 'art' expresses different emotions and feelings. I've seen a lot of good graffiti; it's a way to speak out in a community. If people used graffiti the correct way, I don't think it would be so bad. For instance, graffiti speaking out against the war, against global warming, against animal rights, in my opinion, wouldn't be so bad!