I will say though, he showed remarkable poise to not just murder this moron. No punches are even thrown. Fun stuff. The guys should send him and his buddies a thank you card.
"This video displays the occurrence in its entirety, to show exactly how Brazilian Jiu Jitsu can be used in self-defense as a means to control and subdue an opponent. Without a single punch thrown, the opponent is first controlled, and in a second encounter choked unconscious as a means to end the confrontation."