Old former boxer vs two young agressive youngsters

On the images captured by a security camera outside a shop, you can see the moment when two youngsters approach an old man with a threatening attitude while the man remains calm and still. The old man, a former boxer who has maintained his agility and dexterity, after bearing with patience, punched the face of one of the boys who was knocked down in a few seconds. Then, he punched the second child, who was knocked down semi- conscious. With both of them on the floor, you can see how the man, as a lesson, addresses words to the youngsters who will certainly never forget them. This happened in Russia.