Jake LaMotta (left) and Sugar Ray Robinson in a slugfest for the world middleweight title on February 14, 1951. It was their 6th and final fight, which became known as the 'St. Valentine's Day Massacre'. Though Robinson won the bout with his relentless punches, LaMotta never went down.
40 years ago, Martin Scorsese released “Raging Bull”, a Hollywood scr…