Maybe he just believes, as I do, that if you're marching down the street with a bunch of people carrying swastikas and chanting "blood and soil" and "Jews will not replace us", and you don't do what any rational, caring person would do and immediately realize you're at a white nationalist rally and disassociate yourself, then guess what? You're not a "very fine person", you're a white nationalist, or at the very least, a sympathizer. It's really not complex or confusing at all.