Are they sure this was what happened? There have been recent cases where an officer accused the staff of mistreatment, when it was not clearly as first stated.
A few weeks ago an officer said he found an entire tampon in his Starbucks drink. Management disputes that story.
I strongly support video cameras on police officers at all times. They should not do bad things. They should not fake crimes or other “incidents”. And likewise, if people treat an officer badly, that should also be recorded. My guess is that the police are on the receiving end most of the time.