It just seems that the White Nationalists / Alt-right / Christian Nationalists / American Theocrats, call them what you will and lump them together as you wish, are essentially medieval in their outlook (and my saying that does a disservice to the culturally rich, cosmopolitan Middle Ages). 

They'd like to roll the West back culturally to some imagined pure form circa perhaps 1200 AD (plus or minus the Protestant Reformation some centuries later, which the Evangelicals among them presumably would like to continue to enjoy, despite its unleashing of  individualism and, eventually, liberalism).

In this outlook, these Western Chauvinists (more accurately, Chauvinsts-simpliciter) - modern Tertullians they are - seem to resemble the fanatical idol-and-art-and-freedom destroying Wahhabist-types they profess to detest and from whom they claim that Western 'civilization' (whatever stunted idea of society that may mean to them) needs to be saved.