What happened between the car tap (lands on his ass seems okay) and just before the stomp (when he's face down and already seems to have been in a brawl)? He also doesn't seem to go down at the end, so did it continue beyond this and was other force used that caused the coma?

Not saying anything was justified but just like when dealing with BLM bullshit about police I want to have a clear idea of what was happening.