I know some people disagree with me on this, but in his heart of hearts, is he really, a racist... I don't know.
But here's what I do know, Trump supporters don't understand how proof works, they seem to think without a white hood, going around with burning crosses shouting nigger, one can't possibly be a racist.
Here's one thing I absolutely do know for a fact, he absolutely meant to appeal to racists, starting with the obviously racist Birtherism, Trump supporters want to forget that little tid bit, but I sure won't.
Islamaphobia has been a way for White Nationalists to tap into the mainstream to great affect, and he leans into that one, full pelt, his lies about muslims celebrating in New Jersey, the Muslim Ban, spreading Islamaphobic propaganda by a British Hate Group on Twitter, not exactly dog whistling, more like megaphoning.
His handling of Charlottesville, questioning a judges impartiality based on his ethnicity, just a few other things you can point to...
All, taken together doesn't paint a very good picture, but Trump supporters don't care, they simply move the goalposts and nothing short of again, a white hood, burning crosses and shouting the word nigger from the rooftops and EVEN THEN I'll bet they'd say "well... Robert Byrd!".
So, their thoughts on this subject are not necessary, they do not matter.