If it played out as an assault/self-defense situation, even if *none* of this other business was playing out, it's serious business for the officer. It's not an easy thing to take a life, or suffer through an assault on your own life. Often there is counseling needed.
I've had two people die this year while my hands were crushing their bones and violently assaulting them (while trying to save them), and been intimately involved in several other deaths (as in, I had to decontaminate my clothing...). Each time, my department required mandatory counseling and mental health awareness checks to make sure those involved weren't having too hard a time moving forward with it.
Rob though wants to punish everyone in the officer's department, and have them move forward living in fear and terror if anyone steps out of line, as judged by Rob's Mob and the Twitterverse. I think we should instead just eliminate police forces entirely, and usher in a new era of healthy community spirit and peace.