Hate and anger have little to do with a typical fight. Fights from pro players are usually for making a statement, changing momentum or retaliation for dirty play on a team-mate. Pros are doing a job. Some of these players look like they are taking out their rage on their opponent, something probably usually reserved for their wives and/or suspects.
Interesting how many YouTube vids have been removed in the last few hours of the beginning of the fight... dare I say, they are dropping like family pets during a SWAT raid?