In 1991, Mike Tyson Taught Two Thieves a Lesson They'll Never Forget:

was walking down a New York street when he spotted an old homeless man sitting on the sidewalk, shivering in the cold. Without hesitation, Tyson reached into his pocket and handed him some cash. The old man's eyes welled up with tears of gratitude.
But just as Tyson turned to leave, two guys lurking nearby rushed over and tried to snatch the money from the old man's hands.
Tyson spun around and, in the blink of an eye, BOOM! BOOM! Two of his signature punches sent the wannabe thieves scrambling for their lives. They didn't stick around to see if there'd be a third.
Tyson then bent down, picked up the money, and handed it back to the old man. With a firm yet gentle voice, he said, ""Nobody's taking what's yours today.""
Even outside the ring, Iron Mike was still undefeated.