I've told this story before so forgive me but I like it:
During the 1960 race MLK Jr was arrested. He was put in jail and the campaigns took different approach. Nixon didn't want to get involved because he felt it would look like pandering for votes, tried to be above board. JFK wasn't sure either but RFK took the initiative and contacted Coretta King and showed support. After that MLK Sr announced he wasn't planning on voting for JFK because he was Catholic but now he would.
JFK to an aide: "So, Martin Luther King's father is a bigot eh? Well we all have fathers don't we?"