Elon Musk recently sat for a wide-ranging interview with The Economist editor-in-chief Zanny Minton Beddoes, who challenged him over his support for Europe’s far right, his anti-Muslim rhetoric and his cuts to humanitarian aid during his stint in the Trump administration. Afterwards, on his own social media network that he routinely uses to amplify his personal views, Musk lashed out against his interviewer. “She is a traitor to the West, plain and simple,” he wrote. By Musk’s assessment, society is full of “traitors.” As he declared over the weekend, “anyone who opposes remigration is a traitor.” So is “anyone who...