Trump followers are not all stupid, though many behave that way. They are however – almost to a person ignorant, and almost all of that is quite willful. We have all encountered it. I would suggest that those who do not support Trump and his cohorts do not imply directly or indirectly that they are stupid. Rather use a more diplomatic approach. I have begun to simply tell them that “when they inform themselves of the basic facts of the issue – we can talk. Until then please go away” . Lost a couple of old friends this way – the price of reality. If no one says it to them they continue on the path of “opinions are facts”. Look where that got us.