This video is gross. It's a prime example of that ego-based martial-bullshit. There is no reason to smash a half-crazy dude to an inch of his life. I'm sure that asshole felt good that night, they probably had a party for him. You might as well go around kicking puppies, it's demonstrates the same level of enlightenment and skill.
If you get to the black belt level and you have not yet learned the art of compassion and service to others, you have learned NOTHING from your training and your belt is meaningless.
A blackbelt is not a symbol that you can kick the shit out of most other people. If that's what you think you are training at the wrong school. If you are, god forbid, teaching with that kind of attitude, you are a complete douche-bag.
That guy deserves to be thrown in prison and gang-raped.