"In the wake of tragic events in Charlottesville, VA, and Donald Trump's initial refusal to denounce the white nationalists behind it all, the "antifa" opposition movement is suddenly appearing everywhere. But what is it, precisely? And where did it come from? As long as there has been fascism, there has been anti-fascism--also known as "antifa." Born out of resistance to Mussolini and Hitler in Europe during the 1920s and '30s, the antifa movement...