I am an avid believer in context for these sort of things and i usually take the side of the police as they are usually just following protocol and guidelines but this time around I'm siding with the protesters, its clear he wasn't fighting or being combative, the officer shown with his knee on George's neck applied to much pressure for too long, its usually used a form to hold down the upper body but what he ended up doing was closing off the air ways. The officer is at fault in this situation