Quigg endorsed Trump for what he said he would do, then endorsed Clinton because she secretly would promote white supremacist policies despite what she said she would do. So Trump talked a good game for white supremacist policies but wouldn't follow through, and Clinton talked a good game against white supremacist policies but is a secret klan supporter? Cuz that makes sense. Read the last paragraph and you've got the truth of the matter.
Deliberate misinterpretation. Wanting closed borders is a specific stance on a specific issue that the klan just happens to hold as well.
Oh my god, please let go of the "Reps freed the Dems' slaves" ridiculousness. That was 150 years ago, and a whole lot of political and social change has occurred since then. Neither political party supports a platform of white supremacy - a true believer among the KKK has to grit their teeth while they vote, because the know they're not going to get everything they want from any political candidate. So yes, it doesn't matter who they vote for, they're shooting themselves in the foot. That said, several of the specific issues that the KKK supports (for racist reasons) are issues that the Republican party promotes (for economic and national security reasons), while the KKK's priorities and the Democratic party platform don't line up AT ALL, in any way.
Seriously, do you go around also saying that the KKK is endorsed by the Methodist, Lutheran, and Baptist churches?
The Democratic party has a LONG list of racist people and actions. There is no denying this. However, the Democratic party has and continues to evolve, just like the Republican party and American society in general. Insisting that the KKK is a Democrat institution is about as accurate as saying Germany is a Nazi regime.