This incident happened in Vallejo, California. Police were called because of a man behaving erratic at a local gas station.
You can see the man running and then abruptly stop and sit down on the curb. The cop apparently upset that the guy was running from him immediately starts punching the man. Once the man tries to cover his face that’s when the officer pulls out his baton and starts plummeting him.
You can hear someone off-camera screaming ‘Police Brutality’ while the cop continues to beat the man. You can hear the cop say get the F@#k back and draws out his gun pointing it at the angry witnesses.
See video below: