I did not see an “execution”. When the passenger got out of the car after repeatedly being told to not move, he SUDDENLY AND RAPIDLY popped out. I’ve watched the video three times and my opinion is that it was a justified “fear for life” shooting. Maybe if I watch it 20 more times, I’d change my mind, but I doubt it. It was a tough call for the cop.
I’m guessing the cop already knew who he was dealing with and that would have ramped up the tension about 100 fold.
Rapid erratic movements pretty much sealed the deal.