That's ridiculous. People get mugged all the time (less than most cities, but it still happens), people are buying every kind of drug, and people are breaking into cars all the time in this city, but they choose to focus on people committing an essentially victimless crime. Graffiti may be illegal, but at least it's a legal activity with morals. Other than a few outliers (who are usually shunned from the graffiti community) graffiti writers don't write on churches, schools, cars or homes. Graffiti has no connection to drugs, or violence in this city. Yet, the police focus on them, rather than the people who are really contributing to urban decay...which isn't even a real problem here...maybe that's the problem. PPD is bored.
...Sorry for the drunken rant.