Even if the knee on the back is not the cause what the fuck is wrong with the officers to just brush off his plea for help? Say he has an asthma attack and couldn’t breath, after he’s handcuffed on the floor there’s not much he can do himself. If you immobilised someone you need to take care of them. If they die in your care while calling for help at the least it’s negligence.
I just don’t get the non voter. Granted I’m not a US citizen, but not voting in your election is effectively voting for fascist theocracy. Your electoral system sucks but if I could choose between having an arm or my heart removed I know what I’d choose.