I think you have identified a major emotional aspect of this bizarre, obviously reactionary hatred. As another responder stated some actually consider themselves superior but there are layers of pathology adding to the confusion.
This needs to be seen and identified as, hopefully, temporary group insanity. While they are a clear minority we can’t deal with them directly as they are blind and irrational. I think polling is showing that they are already down to the truly troubled.
The only option I see is to block and remove those who are exploiting these people for positions and power. I’m afraid that is going to take some emergency, extra judicial correction.
In normal times we would be able to vote these people out of office but I’m not sure that can be done now. Trump is being pumped up to deny any election that he loses. Things would get very ugly after that.