He collapsed. Near the end of the clip, after they've walked him across the street, watch how is walking suddenly gets very unsteady, and then just after the 5:20 mark he collapses to the ground which pulls one cop down with him. That's how George Floyd ends up on the ground. He was probably having a heart attack (fits with the autopsy findings), which is why he collapsed, and why he kept saying he couldn't breathe. It probably felt like a ton of bricks was on his chest because of a heart attack.
“He was probably having a heart attack (fits with the autopsy findings),”
I have never consider heart attack.
He stumbled when he was near the pavement side of the car. How did he get to the other side of the car (street side) where he eventually died? You’re judging the scenario based on a few snippets of video available. Why not wait until all of the evidence has been presented before deciding on someone’s guilt or innocence?
FWIW, I read earlier that Floyd complained of lack of breath while he was standing up, after he was cuffed and while standing against the wall of a store.