evidence: The movement called "antifa" gets its name from a short form of "anti-fascist," which is about the only thing its members agree on. President Donald Trump and some far-right activists and militants have claimed antifa is allegedly conspiring to foment violence amid the protests sweeping the U.S. In my forthcoming book, "American Antifa: The Tactics, Culture, and Practice of Militant Antifascism," I describe antifa as a decentralized collection of individual activists who mostly use nonviolent methods to achieve their ends. Their goal is to resist the spread of fascism. That word can be an inexact term, but generally antifa activists see fascism as the violent enactment and enforcement of biological and social inequalities between people.