Whenever I see people ranting and raving about other people in this country being “un-American”, I usually try to ask them who appointed them to be the Arbiter or American-ness, or how they became qualified to make those kinds of pronouncements.
I half expect to find out one day that there are degrees in the subject of American-ness available via Trump University.
This defining of people as “un-American” is,of course, total bullshit, a form of demonization of people who the labellers either disagree with or despise. This article by Charles Clymer explains cogently and bluntly why it is bullshit.