A motley conglomeration of peaceful protesters marched from Oakland to Downtown to East Park on Sept. 25, the second day of the G-20 Summit. Here are highlights set to the impromptu drum jams performed by some of those musical demonstrators. A motley conglomeration of peaceful protesters marched from Oakland to Downtown to East Park on Sept. 25, the second day of the G-20 Summit. Here are highlights set to the impromptu drum jams performed by some of those musical demonstrators.