BJJ promotes the concept that a smaller, weaker person can successfully defend against a bigger, stronger, heavier assailant by using proper technique, leverage, and most notably, taking the fight to the ground, and then applying joint-locks and chokeholds to defeat the opponent. BJJ training can be used for sport grappling tournaments and in self-defense situations. And this is why you never mess with BJJ Girls!
This homeless guy apparently (according to the video audio) grabbed this BJJ girl’s a*s after he broke into her place. Well, he got restrained very quickly by her and her buddies who were all BJJ fighters. What’s the lesson? Don’t harass people, be an upstanding citizen, and learn to fight if you’re living in dangerous areas.