Here is some security camera video starting at the time the cops arrive on the scene.
https://www.youtube.com/watch?v=EKV7Mi9YUAQ
Worth watching.
I did not see the choking on that video looks like he stumbled and they put him in a car. I did not see where he was on the ground with the knee on his neck.
So where does he get killed on this video I just see him being put in a car alive.