What makes neo-Nazis “extreme right wing”?
Their philosophy tends to the extremes of conservatism, mainly. They go past the mainstream conservative mistrust of uncontrolled immigration, drifting into outright xenophobia, and tend towards a dictatorial form of government rather than the fascism of their namesakes.
I’ll grant that it’s difficult to winnow out a valid description of “extreme right-wing” these days, because so much of the media labels anyone who still believes in the constitution or expresses any conservative position as “extreme right-wing”. Further, at least IMHO, the political “spectrum” is circular in a way, and as you approach the extreme ends, it’s possible to pass right around into the extremes of the other “end”.
“What makes neo-Nazis “extreme right wing”?”
Leftists desperate to disassociate themselves from “National Socialists” (a term perfectly describing the Left).