Details are here: http://www.sfcriticalmass.org/20th-anniversary/calendar-of-events/ and the afterparty is at Vesuvio (Columbus & Broadway, next to City Lights Bookstore in North Beach). Razorcake and all of the frontline anarchofeminist Earth First!ers are particularly and most cordially invited to join with us in the ongoing removal of the global psychotic patriarchal plutocracy. Considering that the tipping-point-of-no-return in regard to climate destabilization on the earth plane is in approximately five years, what are we holding back for? It's up to us to intervene in history. See y'all in SF soon...bring party hats. Peaceout.