Speaking of not snitching, check out this mural at 20th and Florida.
When is it OK to snitch (i.e., inform authorities of a crime being committed, even though it won't make you popular in a certain clique) and when is it not? Also, maybe the city's sanctuary law -- a law Mayor Newsom vetoed, which the Board of Supervisors put this kibosh on this past Tuesday -- wouldn't be that bad after all? Just putting that out there.
(Thanks goes out to SFist commenter "What" for bringing this image to our attention.)