I favor the cops in this situation. It is obvious the suspect was quarrelsome with the comment he made to someone out of camera range even as he stood up from the bench seat. The cop with the suspect began to finger print the subject, who was still arguing with someone off camera. When the cop attempting to finger print the subject told him to pay attention, the subject became belligerent, verbally abusive and combative.
If I have any complaint about the cops, it was their ineptness in taking the punk to the ground immediately. Had those three cops been under my supervision, all would have received letters of instruction for their failure to perform. As a retired sergeant with the California Department of Corrections, the very first thing staff are trained to do with such unruly inmates is to get them off their feet, then pile on the squirming test-tube baby, get him in restraint gear and -- if necessary -- body slam the punk into a holding cell.
There is zero evidence to suggest that "[a]ll the first cop had to do (was) treat the guy with a little...respect and the situation would have stayed under control." The subject was argumentative from the git-go and, as evidenced by the recording, just looking for a reason to initiate a physical altercation. Had this punk done that with my team at the prison, the local hospital would have treated him for a lot more than minor injuries.