The Data & Society report by Rebecca Lewis (quoted in this article as a source) is very poorly done. It brands people who are clearly on the left as "alt-right" because they have either once spoken to an alt-right person, or even (in one case) simply been at the same event (not an alt-right event) with an alt-right person (Tim Pool, evidence in his YouTube videos on the subject).
I'm defending the 4/5 people who have been labelled "alt-right" by groups like Data & Society and by articles like this one, who believe in equal opportunity, legal immigration, individualism, and principles of the enlightenment. Most of them are progressives and several of them are jews. Lumping them in with "fascists," "racists", "nazis", or people who yelled "Jews will not replace us!" is factually wrong, morally wrong, and has done real-world damage to them. This includes people such as Jordan Peterson, Tim Pool, Eric Weinstein, Dave Rubin, James Damore, Ben Shapiro, Joe Rogan, and yes even Carl Benjamin (Sargon of Akkad).
I am NOT defending Richard Spencer, Stephan Molyneux or Milo Yiannopoulos. I've listened to them, I disagree with them, and I think "alt-right" is an appropriate for them.
There seems to be a mass delusion going on here. Folks on the left talk about the boogy-man "alt-right" and label people at whim, and then everyone is scared to actually go and fact-check lest they be discovered watching "alt-right" material. The predictable result? The set of people labelled "alt-right" just gets bigger and bigger.