The thing these two ( and many like em ) hang on to because it was mentioned by a dude they admire is that there were prominent members of the Democratic party in the late 1800s that supported the KKK.
1, and most importantly 1, the parties as we know them, have dramatically shifted since then ( i.e. Lincoln, a Republican, would be a Democrat today ).
2, there were also Republican party members involved in supporting the KKK ( back then ).