Nothing personal, but really, a "negative mark on his record"? BFD. If he hadn't been a cop, what he did would constitute assault & battery, which depending on jurisdiction may or may not be a felony and would certainly have landed him in jail.
The proper punishment is firing and criminal charges, not a "negative mark on his record" that would keep him from "ever getting promoted".
This whole Prenda saga is like a giant Fuck You to the entire legal system. They're saying we can be complete douchebags to anyone and everyone, lie cheat & steal, and there ain't a goddamn thing you or anyone else can do about it.
Where in the blue fuck is the IRS when you actually NEED them?