Salt Lake City has had some trouble with graffiti lately. I've noticed it on exit signs which can be particularly dangerous if you don't know your way around. It's so irritating to see a city employee suspended above the freeway to clean off a sign that has been covered with someone's spray painted mark.
I read about these badass knitting graffiti groups in Handmade Nation and LOVED the idea. Nothing they tag is damaged, nothing requires fixing, it looks pretty and it's hard to look at and NOT consider someone's loving hands making it. I wish this kind of group would swarm into SLC and give us some covered tree trunks, street signs, and park benches. They can start at my house.