Why are so many willing to give leftist extremism a pass?

At a Munk Debate in 2018, Canadian psychologist Jordan Peterson stumped his opponents by asking what should have been an easy question: “When does the Left go too far?”

America has rightly developed a heightened sensitivity to warning signs of radicalization on the Right. The unspeakable legacies of the Nazis and the Hutus, among other terrible right-wing regimes of history, have made us responsive to the slightest hints of racial superiority and malignant nationalism.