Dia de los Muertos San Francisco

http://www.dayofthedeadsf.org/

American Indian Film Festival

http://www.aifisf.com/

San Francisco Hip Hop Dance Festival

http://www.sfhiphopdancefest.com/

Critical Mass Bike Ride (begins at east end of Market St on the last Friday of the month at about 6pm)

http://critical-mass.info/