> in the last year or decade
> what those perps and officers have experienced
Both totally irrelevant to whether or not it's appropriate to punch a handcuffed prisoner in the face while they're not resisting.
If a cop is suffering from PTSD or stress to the point where they can't keep themselves from assaulting a handcuffed prisoner, then I am genuinely very sorry for them, but they're still in the wrong job and they still need to be let go.