The Republican party was literally founded as the anti-slavery party because the Democrats were pro-slavery. KKK was the Democrat party from the beginning. Biden himself gave the eulogy for Robert Byrd, a KKK leader, calling him a friend and mentor.
https://www.express.co.uk/news/world/1344422/joe-biden-news-eulogy-kkk-recruiter-donald-trump-racism-us-election-spt
Yes, Democrats DID start the Ku Klux Klan (and it’s still the party of racism)