This is footage for the first performance done by the Dancing Ambassadors and the Brass Liberation Orcehstra. They were the third performance, after the flash mob and Aztec dancers.
April 1 was a national Day of Action for the homeless. It was also Occupy SF's move-in day. Occupy SF inhabited a vacant building for the purpose of creating a social/community center. Many from Oakland came down to help out with the move-in.