From The Tonight Show in May:

JAY LENO: …Because it seems like there’s been some concern that maybe there’s not enough diversity among Mormons.
GOVERNOR ROMNEY: Well, actually back in the early part of this or last century until 1970 something, there were not priests in our church who were African-American. I remember the day that that changed – I pulled over to the side of the road and literally broke down. It was so important to me to see that change in my church. My dad had always been an advocate of civil rights. He marched with Martin Luther King. Our heritage had been very strong to protect the rights of all of our citizens. I feel very strongly that discrimination is wrong and I’m happy that my church – actually one of my best friends is in Ghana right now serving as a leader of our church over there, bringing people into our church. It’s a great movement around the world.