4 police fail to control 1 man

A bystander initially approaches the man from behind while he is focused on the police, grabs him around the waist and effectively takes him to the ground. Police move in, then escort the bystander away and attempt to control the man with arm/wrist holds. When they fail at this and the man struggles free, they deploy their batons and strike him several times to little effect. The man eventually is able to walk away and the police follow behind by the end of the video.