Nazis and fascists were very nationalists like Trump, but they were socialists too unlike Trump. Nazis were racists, Trump on the other hand is not. As far as I know he had a black girlfriend, he seemed to be very happy with her.
Nazis should rather be compared to comunists, like Stalin, Mao, or Pol Pot. I don't think Trump is like the comunists or any kind of fascist. Maybe some of his acolytes have this crap in their heads, like the KKK.
So, I'd say the KKK are fascists and as punishment I would force them to mate with black people and have children with them. No punches, no jail, no electric chair, only a taste of their own medicine.