The SF Green Party endorses the "Occupy San Francisco" movement and the expression of direct democracy that it represents. The New York City Green Party has also issued a statement in support of Occupy Wall Street.
For more information, see their website, http://www.occupysf.com, and you can get live updates on Twitter at #OccupySF. OccupySF holds general assemblies (a means of making decisions through Consensus, similar to the way we make decisions in the Green Party) Sunday-Friday at 6 PM at the occupation site in front of the Federal Reserve Building downtown. All are welcome to participate, speak, and vote on Assembly proceedings. On Saturdays, they plan to hold general assemblies at noon in Union Square. Be sure to check the website for any updates.