“The democrat party of the 19th century was also pro-slavery, founders of the KKK and were willing to leave the Union to write their own Constitution”.
Pro-slavery? Yes, and so was every one of the original 13 colonies.
Founders of the KKK? Yes, and it was founded for a noble cause, to protect women and children from maurauding gangs during Reconstruction, when each and every Southern State was controlled by the Federal Army, and Southerners had no rights whatsover.
Yes, every Founding Father believed in the right of secession if a state so desired. They desired and they left. Their country was invaded by Federal forces to bring them back into the mold because of monetary reasons and nothing else.
Baloney. The KKK was formed to keep newly emancipated blacks in line.