Uplifting vandalism

Graffiti is usually regarded as negative, unnecessary, and costly, but every once in a while you see some uplifting graffiti that makes it all seem worth it. Everyone needs to hear some positive words now and then, so seeing a little random piece encouragement can go a long way. We found some examples of vandalism that don’t even seem like vandalism because they make you feel so good. Which ones would you not mind seeing in your community?