I “googled” Alt-Right- and guess what, every response was related to a neo Nazi, white supremacy theme, seems some skin headed idiot coined the term a few years back, 2008 or so.
Every right leaning ( conservative as opposed to modern liberal) person ought to be aware that leftist ideologies are apparently trying to associate with them, and we all ought to clarify the point anytime we hear the term coined in conversation.
Alt right is leftist extremism.
Richard Spencer coined the term alt-right, he was also one of the Charlottesville rally organizers.
He identifies as a white nationalist and has lots of ties to KKK and Neo-Nazis.
Calling him and his associates leftist would be a misnomer.