John F. Kennedy was a reluctant and belated anti-segregationist. I recall hearing that when Nat King Cole visited the WH with his white wife, he asked Jacky to separate them for the group picture, and she adamantly and tearfully refused. Good on her.
That would’ve been Sammy Davis, Jr. Nat King Cole never had a White wife (although he was having an affair with a White woman prior to his untimely death from cancer). Sammy pointed out the difference between Nixon and JFK when he met them. Nixon was warm and gregarious towards him. JFK wouldn’t even look him in the eye. One reason Sammy endorsed Nixon in 1972. He knew the media and cultural portrayal of Nixon was utterly at odds with his personal experience.