I acknowledge that he should have de-escalated by taking his hand out his pocket. That said, the thugcop’s behavior was WAY beyond acceptable or legal in my opinion. WAY BEYOND.
I think they guy saved his life by not immediately complying.
A long time ago (a bit more than 50 years), two of us were truant from our school and two cops had to chase us down because we ran. We were taken down to the sub-station and when we were being moved from the back of the car to the back door of the sub-station, the passenger cop (the guy who had chased me down) held a shotgun on us while we walked. I guess the idea was to discourage us from running again. Interestingly, they never handcuffed us. If we had run again, I really doubt that he would have shot us, but we didn't know that then.
I would say the cop’s approach was questionable, but the other guy’s refusal to show his hands was clearly over the line.
I was sort of with the guy up until then, but once he did that it put the whole situation in a totally different light for me. Made him seem like a nutcase and made me wonder if the cop saw something (we can’t see what he was seeing) to make him feel he needed to unholster his pistol.
Refusing to show your hands is a deal breaker for me.
From that point on, I thought the cop showed a lot of restraint (perhaps too much for his own safety) by backing off. I was expecting him to yell “Show me your hands or I will shoot!” or something along those lines.