I agree with the 'hindsight' issue. Calling the play from a computer screen, and being faced with an 'unknown' and possibly 'under the influence' citizen who is reportedly armed are two different things.
That still doesn't explain the last bullet in the back, while he was laying on the ground.
That last phrase, ‘last bullet in the back’ is figurative.
IIRC, the bullet went in through his posterior and up towards his lungs.
“That still doesn’t explain the last bullet in the back, while he was laying on the ground.”
Even if everything else was exactly as the cops say, this is beyond my understanding. Do modern LEO academies have instruction in administering kill shots? Incidents like this are why I will never willingly interact with a cop. Nothing good and much bad can come from it. I am cognizant of the fact that any interaction with a cop can end up ruining my life so I stay as far away from them as practical. I don’t do anything illegal as a matter of course but the way some cops act these days is uncomforting.