Jackie Robinson lived only a decade as a Hall of Famer. He suffered from diabetes and died of a heart attack at age 53, in 1972. Robinson had integrated the major leagues a quarter-century before, and he never stopped striving for social justice.

¡°I marvel at how much this man did in such a short period of time,¡± said Doug Glanville, a former major league outfielder and an ESPN analyst, who gave his son the middle name Robinson. ¡°He lived, like, five lifetimes. He was in his 50s when he passed away, and you sit there and go, ¡®How in the world did he do all this? How did he take all this on?¡¯¡±

Glanville teaches a class on sports and society at the University of Connecticut and assigns students a letter Robinson wrote to Martin Luther King Jr., in 1960, urging King to help quell the infighting between the Southern Christian Leadership Conference and the NAACP. Robinson co-founded a Black-owned bank in Harlem, served as a columnist for New York newspapers and wrote in his autobiography that he could not stand and sing the national anthem.