"How dare you call Hitler a Nazi! Slander!"
The rebranding of a bunch of loosely-collected quasi-fascists who share a bitter hatred of the Left and a generally misanthropic, nihilistic outlook (that is, towards anyone that isn't them). Their ideology is usually vague, though they all have a dislike of intelligence, tolerance and femininity - and democracy, of course.
The Alt Right's ranks are full of under-educated white men who transform their inner insecurities into rage, and that rage into misguided spite. The two main subsections are the autistic 4chan keyboard warriors (you'll hear them use the word soy boy
even though they probably only leave their bedrooms once a week), and the tiki torch marchers, who have been known to use their feet to walk. They also murder people from time to time.
It's an unholy combination of the bullied kids at school who are only a few steps away from shooting it up, and the old-school neo-Nazi youths (also bullied at school), some of whom are now actually fully-grown adults.