Actually, the Trump problem is more-or-less the same thing that's been kicking around on the right for a couple of decades.
I once ran into one of them. It was genuinely shocking. Absolute nut job.
I am scared for the US that it has so many people of a similar type and a party which coddles them. They need to be confronted and marginalised. But no one in the GOP is brave enough to do it.