Jason Willick explains at “The American Interest” why The Campus Left and the Alt-Right Are Natural Allies:
On the one hand, excessive left-wing speech policing and cultural brinksmanship on issues of race and gender was bound to make Milo-style ideological transgression more appealing. On the other hand, the alt-right’s newfound cultural power seems to vindicate some of the assumptions of the PC leftt: that racism and misogyny are deeply embedded in America’s cultural fabric, just below the surface, ready to erupt unless controls on thought and language are continuously tightened. …
The PC left and the alt-right exist symbiotically with one another: Working together to exacerbate tribal loyalties, to undermine the legitimacy of the state as a political unit, to question the idea that Western institutions can really treat groups of people with equal respect—in other words, to draw out and hijack the inherent weaknesses and contradictions in the Enlightenment liberal tradition. It’s unlikely that either movement has the cultural power or breadth of appeal to succeed on its own. But taken together, they make a fearsome foe.
From where I sit, it seems that far more center-right conservatives and libertarians are sharply critical of Trumpism and the alt-right than center-left progressives are of illiberal PC extremism, which they often strain to defend when they aren’t denying that it exists at all.