The term alt-right was coined by Richard Spencer, a white nationalist, to describe his ideology which includes white nationalism and opposition to Progressivis

The term alt-right was coined by Richard Spencer, a white nationalist, to describe his ideology which includes white nationalism and opposition to Progressivism [1]. Other, non-white nationalists may describe themselves as "alt-right", but they are effectively co-opting Spencer's ideology. 1. https://en.wikipedia.org/wiki/Alt-right https://en.wikipedia.org/wiki/Alt-right Disclaimer: I cite Wikipedia, but I also follow white nationalist movements closely and so I have my own level of expertise and awareness.