It's part of a long interview with him and author Jacquelyn Woodson.
Carter talks about his own segregationist father, and how segregation was a tool, among others, to keep people in "ugly boxes."
Here’s a few other excerpts, like this on the Confederate flag:
JC: Also the South Carolina legislators are not voting to take down the flag because they’ve changed their mind about it. They’re voting for it because South Carolina and Charleston are going to suffer severely, economically, if they don’t make the change.
True, I'm sure.
That said, let's not forget that, in 1976, Carter made a play to hold onto what became called "Reagan Democrats," some of whom had been called "Wallace Democrats" four years earlier. Or that he was the first neoliberal Democrat on regulatory and other issues. (Carter started deregulating trucking; Reagan just finished it. Carter started deregulating airlines.)
I don't know that Carter has explicitly repented of his 1970s, let alone 1960s, racial stances. His actions seem to indicate that.
Or this on race relations:
JC: You’re assuming that a white person who believes in the Confederate flag is listening to his black neighbor who doesn’t like it. There’s very little communication on a sensitive subject like that.
Woodson responded that this was because blacks “knew their place.” Carter doesn’t disagree. He presumably accepts Woodson’s “complicated” observation.
Anyway, give the whole thing a read.