Works for me, but still doesn't answer the question. 
@Sanguine I suppose you can define the people to who you referred as a lunatic fringe from the fever swamp.
As for the alt-right itself, I think they're described best as:
* Anything
but conservatives.
* Smaller in number than people think, but larger seeming thanks to the media's ignorance that
allows them to appear or to portray themselves as larger than people think, part of it being
that the mainstream media thinks
anyone who stands athwart the metastasising State as
opposed to properly construed, constitutionally limited government is therefore definable as
being in the alt-right camp.
