Nothing you wrote makes the police sound any better.
Is that my job?
They didn’t cause his death. In putting him on his stomach they were, knowingly or not, actually doing something that can help someone in respiratory distress.
And from what I heard at least some responders are trained to not trust claims that folks can’t breath, to apply restraint even as they do something like lay someone on their stomach.
Floyd died. But the cops didn’t cause it.
Then there’s the shenanigans the race grievance pimps were apparently pulling around the trial.