Idriz Redzovic, a third-degree black belt in Gracie Jiu-Jitsu, successfully subdued an allegedly violent thief at a 7-Eleven in Chicago last week. While that’s pretty impressive, the real reason he’s garnering attention right now is because he took out his phone and started doing a livestream while he had the suspect pinned to the ground until the police arrived.

The owner of the Supreme Academy of Jiu-Jitsu in Lincoln Park, Redzovic, stopped into the 7-Eleven at Ashland and Lawrence on Thursday night to buy a few Slurpees for his kids, according to the local station.

The black belt, who has 22 years of self-defense instruction, reportedly observed a guy pestering people outside the business.

Redzovic told the broadcaster his account,  “He comes up to me and says, ‘What are you looking at?’ In my training I tell people to take a step back, hands up, don’t engage unless you feel safe.”

You must accomplish this without a doubt. Never start a fight at random. You can never be sure if the attacker is carrying a knife, pistol, or other weapon. Fighting is never a smart idea, unless it’s in self-defense, which means you were assaulted first. It is hazardous. It just takes one person to charge you, knock you to the ground, and cause you to hit your head on the concrete for it to be over. Permanently.

Always take a step back and assume a stance that makes it obvious you aren’t interested in exchanging punches.

He claimed to have kept an eye on the individual, who eventually entered the business and then seemed to attack a worker, as shown on security footage.

At that point, Redzovic realized it was time to act. Self-defense and martial arts aren’t only about defending yourself; they’re also about defending other defenseless individuals. The concept of martial arts is firmly rooted in that ideal.

Redzovic then pulled out his phone and started a webcast, which managed to hold the guy in check for an incredible 18 minutes.