On an October in 1954, 12 year old Cassius clay and one of his friend rode their bicycles to th Columbia
auditorium, for its annual convention. The boys parked their bicycles and went around the bazaar for few hours and decided to head back home. But when they walked back to where they'd left their bikes, the new Schwinn bike of Cassius clay was gone.
Cassius was in tears and went to a police officer standing near the basement of the building, where there was a boxing gym, the Columbia gym. Cassius was furious and demanded a statewide manhunt for his bike and threatened the beat hell out of the kid who had stolen it,
The police officer, named Joe Martin after listening to Cassius's oaths of revenge, said, "well do you know how to fight?"
Cassius said no, but I'd fight anyway. Martin said that perhaps the best thing to do would be to come around to the gym and learn how to fight before making any nasty challenges
Soon Cassius started coming to the gym on South florida street and learned the rudiments of boxing.
and went on to became a legendary boxer
Which boxer am I talking about? Answer in Comments