When I was at Embarcadero Center like at 12:00 P.M., folks were just giving speeches at the ??? Herman Plaza. Like at 4:45 P.M. at Civic Center, Los Mocosos (a rapping/merengue group from San Francisco's Mission district) were performing and giving their thoughts in between songs.
I was "working" at the time, so I only stayed for like 30 minutes at each place. Yes, I was looking out for The Coup and maybe others.