Do yourself and watch the short documentary on Mission art embedded below.  I won't spoil too much of the short, but it's a great survey of Mission art, covering the “Urban Rats” of the 1980s, the repeated destruction of the Rachel Corrie segment of the 22nd activist tribute mural, the effects of gentrification (what piece on the Mission would be complete without that?!), Precita Eyes, and various alleys.  For the folks who hate the Marina/white people, one UC Santa Cruz professor even takes a big, steamy dump on both caucasians and the Marina, slamming “wealthy white people,” as they lack “cultural legacies.”  Ohhhh shit.

Update: Apparently this originally aired in May, but it's new to me.