Sammy was a little frail dude about 5-5 and 130 pounds. He was basically MJ in that he grew up as a child as an entertainer. He was a traveling entertainer when most kids were in 2nd grade. So he grew up performing and also since he didn't have a childhood he was really a soft hearted person overall and especially to everyone. Thats why his childhood parallels MJs.
Second he was drafted in WW2 in an integrated camp. The much bigger white racist soldiers would beat him up due to being so small and unable to defend himself. He would get beaten up so bad that his nose was broken 4 times. Thats why his nose was so flat.
One of the high ranking military folks noticed that he could dance and sing well. So they asked him to perform for the troops. He noticed that many of the same racists that would harrass him and beat him up. Where now chearing him on.
This is when he realized his calling that entertaining was in his blood. And that he could navigate in this world even with racism due to his god given abilities. No more different than countless black athletes before Sammie, during Sammies time and after his time.
Last it wouldn't be wise to criticize sammie cause how docile or small he was. This is a black man who marched with folks like MLK. Who spend hundreds of thousands of his own money (which would be millions in todays money) to bail MLK out of Jail and fund the civil rights movement. Cause of his finacial support (and other black folks like him) folks like you and I can live where we want, date who we want, go to what school we want and work where we want.
Oh and a little bit about sammie. There was one performance he did where they wrote him a check (can't remember the amount maybe 20 or 30k) for the performance. He takes the entire check and sends it to MLK to get him and other civil right workers out of jail.
Sammie, Belafonte and dikk Gregory often times get overlooked in how these black folks sacrificed their careers and money and put their lives on the line for black folks and future black generations. All at the height of their careers. When they could have said the hell with it and counted their riches (like many of the clowns we see today).