The party-affiliation switch happened gradually, over ~30 years. The slope of that change is roughly the mirror image of the decline in overt (Jim Crow-style) racism.

The real "switch" over those 30 years was simply that Democrats changed the target of their racism from anti-Black to anti-white.

https://fixupx.com/CynicalPublius/status/2086608767165374913

_they hate men and this proves it_

https://www.youtube.com/watch?v=hvyw1RNxHY0

"But that wasn't true Fascism!"

Oh, wait..right logical fallacy, but wrong "ism": That's not the excuse the Fascists use—they're not that intellectually dishonest.