If you're told there's an aggressive man shouting racial abuse at a passenger unable to calm down
That is the key, again a short illegally shot phone video does not tell the whole story but at the end I would say he looked calmed down, shocked probably that the bloke behind called him on his bad behaviour. I am trying to imagine how the cabin crew would relate what happened to me if that was on one of my flights, what words they may use because ultimately as PIC I would have to be guided by them.