It's no secret that Huffpost generally appeals to readers on "the left" and pieces about Trump have a permanent footnote at the bottom that says something like, "Donald Trump is misongynistic, xenophobic, sexist, racist..." Etc. - and that has been the case, openly, for about a year. They make no bones about not supporting Trump. And that is based on comments he has actually made about women and minorities, and people like the KKK who support him. That "opinion" is completely based on his own words, recorded - which he calls unfair or denies after saying them on national TV.
What has he said about the KKK?