Chadwick Boseman, who died Friday after a battle with colon cancer, was someone who on the big screen brought to life heroes like Jackie Robinson and Thurgood Marshall and fictional ones, like the Black Panther.Chadwick Boseman, who died Friday after a battle with colon cancer, was someone who on the big screen brought to life heroes like Jackie Robinson and Thurgood Marshall and fictional ones, like the Black Panther.