Roger Scruton coined the term “oikophobia” (from the Greek oikos for “home”) to describe the fear of one’s fellow countrymen.Reynolds identifies the fear Clinton supporters have when finding themselves in the company of Trump supporters. He cites examples of them imagining Trump supporters to be rapists or anti-Semites, or worse.
This is the classic fear of the "other," pretty much hard-wired into humans. We've pressured Americans to deny having these fears, except in the case of lower-class whites against whom it is still okay to be prejudiced. His examples are funny and sad at the same time.