Crowd smashing windows of a MUNI bus at 3rd/Market just after midnight after the Giants win the World Series. At the beginning of the video there was still a handful of people in the bus. Also seen is the pile of thrash cans burning in the middle of Market St.
It's important to note that these actions are obviously not the reaction of the city as a whole or any reflection on the San Francisco Giants. Just a relatively small crowd of people who got way, way out of hand.