the use of force by officers and assaults on officers drops by as much as 60%
Uh huh, and do you know why that is? That's because if you annoy a cop, you get charged with "assault on a police officer" even if you didn't touch them. With a video recorder serving as a witness, the cops know they can't engage in what is commonly called "testilying."
In my city, the charges cops love to slap anyone they don't like with include AOAPO and "disturbing the peace" - the latter of which basically consists of "a crowd gathered because of you."
I knew someone - a sub-5-foot-tall, sub-100-lb girl - whose birthday party was ended by cops because it was too loud. Fair enough. She provides her information to one cop, and then a second cop comes in and asks her for her personal information again a few minutes later. She asks him why - she just gave it to the other cop. He refuses to say why, and she asks him again why he can't get the information from the other cop.
Next thing she remembers, her head is slammed on the countertop and she's in cuffs. Spent the night in jail, and the next day in court answering charges including disorderly conduct, resisting arrest, and assault on a police officer.
The judge looks at her, then looks at the cop, who's a burly nearly-6-foot-tall dude, then looks at the charges and says "Seriously? SHE resisted arrest and assaulted YOU? You've got to be kidding me. Dismissed."
Wasted thousands of dollars in legal fees, because some dickhead cop broke the law and filed false charges, lied in his report, and lied in court.