It looks to me that they want him to move and he doesn't. When the riot police ask me to move I move, he didn't and got pushed out of the way. Its not like he was co-operating with them.
Shame he died but the police felt he needed to be moved and moved him. If he had removed himself maybe he would still be here but he played silly beggers with the riot police, not wise in the middle of a mass riot.
He got up quite quickly, no need for the police to check on his welfare seen as they were in the middle of a riot and it was hardly an accident, they wanted him out of the way. Perhaps if they showed more of this aggresion the knob heads who rioted would think again about doing it.