This could just go around and around so here's a basic definition of "alt-right" from Wikipedia:
"The alt-right, an abbreviation of alternative right, is a loosely connected far-right, white nationalist movement based in the United States. A largely online phenomenon, the alt-right originated in the U.S. during the 2010s, although it has since established a presence in various other countries. The term is ill-defined, having been used in different ways by various self-described "alt-rightists", media commentators, and academics. Groups which have been identified as alt-right also espouse white supremacism, white separatism, severe immigration restrictions, racism, xenophobia, antisemitism, antifeminism, homophobia, and islamophobia."