Not going to re-fight the civil war. I am sure you are well aware that the growth of the Republican Party in the south was fueled by disaffected Democrats, many of whom harbored racial biases, and who felt abandoned by the party when they adopted a more inclusive attitude toward African-Americans. So, New party in charge but made up of those who have the same old racially intolerant attitudes.
As for your Klan reference. Since the majority of the white population in the south was democratic it stands to reason that the majority of the Klan would be. But enough of the past, take a look and see what the major party affiliation of present day Klan and other White Nationalist organizations is today (which is what is important). The vast majority are, or align themselves with, the Republican Party. Again, IS rather than WAS.
Your last point regarding Sessions is but your opinion; mine is different and there is a lot of facts out there waiting for you to review and, if justified, revise your position. I will leave you with one thing however; before his hearing Sessions listed four civil rights cases that he said he was instrumental in the resolution of. He further clarified this claim by saying that his role in the cases was to “provide support for the Department of Justice, Civil Rights Division, attorneys. I reviewed, supported and co-signed complaints, motions, and other pleadings and briefs that were filed during my tenure as U.S. attorney. I provided assistance and guidance to the Civil Rights Division attorneys, had an open-door policy with them, and cooperated with them on these cases.”. In some of these cases the lead attorneys say they never even heard from nor spoke with Sessions. His role could probably better be said that “By design, attorneys in the Justice Department’s Civil Rights Division were directly responsible for the day-to-day tasks in these legal cases. Sessions, as United States attorney, had a supervisory role. Sessions’s “strong record” on civil rights has more to do with the fact that he didn’t interfere in these cases, or otherwise make it difficult for the Civil Rights Division attorneys to do their jobs.” Hardly what I would call a stellar civil rights record. Finally, here is an article with quotes from Sessions and his responses when asked about what he said.
But, I don’t expect you to take my word for it, only ask that you do your own research and see if you don’t reach a different conclusion