When you take the parties away and just think about who did and didn't support the Civil Rights Act of 1957 (or 1964, Voting Rights Act, etc., it becomes clear who's on which side.
I was alive when Strom Thurmond died. I remember it. That dude was a hardcore GOP Republican until the day he died. The openly racist man who filibustered against the Civil Rights Act of 1957, and literally changed his party affiliation based on where each one stood on whether or not black people should be seen as people.
We all know what party he chose, and it doesn't sound like Lincoln's values to me.