Everything you posted is, again, essentially a lie. The south has been the source of the country's racism primarily for centuries. In the past, it was in the Democratic Party, for decades it's switched to the Republican Party, where the racists now live. The Democratic Party has never "welcomed back" the racists or their policies.
You, like many Republicans, lie to try to hide the fact by yelling "Robert Byrd" a lot and misrepresenting him to try to say the Democrats are the party of the KKK in modern times.
Robert Byrd WAS in the KKK as a young man - *in the 1940's* - who had already left and renounced it when he started in politics in *1952*, he had joined because he “was sorely afflicted with tunnel vision—a jejune and immature outlook—seeing only what I wanted to see because I thought the Klan could provide an outlet for my talents and ambitions. ... I know now I was wrong. Intolerance had no place in America. I apologized a thousand times ... and I don't mind apologizing over and over again. I can't erase what happened … it has emerged throughout my life to haunt and embarrass me and has taught me in a very graphic way what one major mistake can do to one’s life, career, and reputation.”
For decades in Congress, he governed FOR civil rights, and was well respected by civil rights leaders.
Robert Byrd didn't go to the Republican Party - the south did. Byrd left the Dixiecrat racism. Many decades ago. All you have is lies and smears to try to hide the truth about how the racism in the country moved from the Democratic Party to the Republican Party long ago.