Where did the term White Nationalism” come from?
I have pondered the same question. It seemed that the identity only showed up a short time ago. The Media/Left needed some incendiary term to raise emotions. Note how it intends that only 'whites' are pushing 'nationalism'. 'Nationalism' by itself lacks the incendiary feature.
Late in the election cycle, Hillary started using the term Alt-Right. Most people had no idea what she meant. I just figured it was a late version of her 'vast right wing conspiracy', but Alt-Right did not really catch on.
Identity politics that is intended to lead to scorched earth and politics of personal destruction. Fearmongering.
The term comes from Alt Left to describe Alt Left Nazi who are the originators of White Supremacy.
: ) That is my story and I am sticking to it.