The Democrats never had anything to do with abolishing slavery as the Republican Administration of Lincoln did. But, not wanting to be outdone, the Democrats formed that innocuous little fraternal order known as the Klu Klux Klan. When I came down to Southern Illinois to live in the early 80's, there was still a subdued, but virulent KKK prescence here. Every last one of them were FDR Democrats.
Every. Single. One.
They're still around. And still Democrat.
I do have one thing in common with them though. We both hate Chicago with a flaming passion. Southern Illinois is a completely different world from the cesspool that is Northern Illinois.