Yeh — they had him in an illegal choke hold that was outlawed 20 years ago —
And there were police on top of him constraining his diaphragm which is essential to breathing.
So, if it took six cops to hold him down, and a chokehold , what are you suggesting they should have done instead ?
A choke hold would have had him out in 10-15 sec and he would have woke up handcuffed in the back of a patrol car.