He was shot ten times. This was no accidental discharge. He wanted to kill him.

> Maybe don't start physical alterations with the police when you're armed?

A masterstroke of weasel word craftsmanship, it almost helps you get away with the fact the "physical altercation" means 'getting beaten to the ground after barely getting in the way', and "armed" means 'unarmed' as they pulled his gun from him before the killing. They had him pinned down to the ground, and then decided that summary execution sounded about right.