Steve,

I think you are over-simplifying here. Yes, many outright racists may have switched from the Democrats to the Republicans as a result of the Civil Rights Movement.

However, the core Democrat/Progressive ethos, right now, and as it has developed over the past few decades, is quintessentially a racist ideology.

White liberal Democrats believe Blacks are inferior and therefore need DEI and Affirmative Action to succeed--preferences based on race. That's a clearly racist ideology.

It's Democrats who are the racists, and openly so.

This is the biggest crock of shit you've uttered so far. You've got the basics all backward.

Lee Atwater in 1981:

You start out in 1954 by saying, “Nigger, nigger, nigger.” By 1968 you can’t say “nigger”—that hurts you, backfires. So you say stuff like, uh, forced busing, states’ rights, and all that stuff, and you’re getting so abstract. Now, you’re talking about cutting taxes, and all these things you’re talking about are totally economic things and a byproduct of them is, blacks get hurt worse than whites.… “We want to cut this,” is much more abstract than even the busing thing, uh, and a hell of a lot more abstract than “Nigger, nigger.”

And LBJ:

“If you can convince the lowest white man he's better than the best colored man, he won't notice you're picking his pocket. Hell, give him somebody to look down on, and he'll empty his pockets for you.”
― Lyndon B. Johnson

After the Civil War, "States Rights" came forward as a core part of the Lost Cause narrative that the Civil War was not about maintaining slavery, but about States Rights (an absolute lie), and then over time became a dog whistle for racism and segregation. So when the OP brings it up, he is talking about "States Rights" used as a dog whistle for segregation and racism mainly in the South, which was a core part of the Southern Strategy where the Dixiecrats migrated from the Democrats to the Republicans, and the Republicans used the dog whistle. You can see how it went from straight racism (nigger, nigger, nigger) part to coded racism, becoming more abstract.

So now Marco has another narrative that ending segregation, allowing blacks in white schools, and attempting to prohibit discrimination is the actual racism. Gotta go work.