Jackie Robinson took a huge amount of abuse and crap in order to do what he did in baseball. He also did things that predated Rosa Parks- he faced court-martial charges of insubordination resulting from his refusal to obey an order to move to the back of a segregated military bus in Texas. A military jury acquitted him an he received an honorable discharge. That was in 1944.
In baseball he was verbally abused by fans and even his own teammates.
Wikipedia
"On April 22, 1947, during a game between the Dodgers and Philadelphia Phillies, Phillies players called Jackie a "******" from their dugout, and yelled that he should "go back to the cotton fields."Branch Rickey would later recall that the Phillies' manager, Ben Chapman, "did more than anybody to unite the Dodgers. When he poured out that string of unconscionable abuse, he solidified and united thirty men." Baseball Commissioner Happy Chandler admonished the Phillies and asked Chapman to pose for photographs with Robinson as a conciliatory gesture.
Dodgers shortstop Pee Wee Reese, who would be a teammate of Robinson's for the better part of a decade, was one of the few players who publicly stood up for Robinson during his rookie season. During the team's first road trip, in Cincinnati, Ohio, Robinson was being heckled by fans when Reese, the Dodgers team captain, walked over and put his arm around Robinson in a gesture of support that quieted the fans and has now gained near-legendary status. Reese was once quoted saying about Robinson "You can hate a man for many reasons, color is not one of them." In addition, the Jewish baseball star Hank Greenberg, who had faced considerable anti-Semitism earlier in his career, made a point of welcoming Robinson to the major leagues."