If you are looking for an answer, here it is. About 75-150 years ago(I dont know the specific year) , the political parties flip flopped. For example, Abraham lincoln is stated as republican on wikipedia, but if you look at the time period, he was actually democratic. So anything before the 1900's for sure, maybe 1930's, the Republicans were actually democrats, and visa versa. The people who wanted to end slavery and jim crow laws would be modern day democrats and the KKK would be republicans. Hope this helps.