In the end, the KKK did not choose to support Donald Trump because he was a Republican but because they agreed with the ideas that he (and other far-right Republicans) spout. It is finally time to face the rise in the twenty-first century of a new form of white nationalism and its alignment with many leaders of the Republican Party, including Trump.
I think it’s better said that the majority of the racism in the Democratic Party (but not the entirety of it) went with them after they defected to the Republican party. The primary reason they held on as Democrats for so long is because the Republicans were responsible for beating them in the Civil War and ending slavery. They refused to ever vote for a Republican for generations after that out of spite, even after the Republicans and Democrats swapped ideological positions in the early Twentieth Century.
Gonna have to disagree with you chief. That racism is all still there. Democratic racism is just more subtle. Start talking about building affordable housing/apartments or busing low income kids into their schools in a well to do liberal neighborhoods and they all turn into David Duke.
Case and point, Boston is as blue and liberal as they come but I guarantee you’ll hear the nbomb there about as often and enthusiastically as you would at a Trump rally in Mississippi