[nipponese]

This site scrapes the city efforts to document who is doing "how much" damage/art.

Once they catch an artist in the act, they will use these archives to recommend a punishment.

But your point in valid - San Francisco likes graffiti.

[guywithahat]

Did he argue SF likes graffiti? I don't think he does, and the people living in the city certainly don't. These are criminals tagging buildings, and city officials who either don't care or are too busy with other things. I'm not aware of anyone who actually lives there who likes graffiti, and logically there's no reason anyone should. If someone wanted a mural they would have hired a real artist to do it.

[nipponese]

He's arguing that the authorities aren't doing anything about it, and the reason is, (going out on a limb here) SF residents are sympathetic to the renegade artistic expression argument.