Who did Trump borrow his press tactics from? Joe McCarthy.

[Commentary] Joe McCarthy loved to savage reporters, singling them out by name at his rallies in the 1950s. The Republican senator from Wisconsin knew the work of each reporter who covered his years-long campaign aimed at rooting out the communists who were supposedly seeded throughout the federal government. Then, moments after leaving the stage, McCarthy would sidle up to a reporter he’d just finished flaying and toss an arm around him: “That was just good fun.” Reporters who’ve covered Donald Trump anytime in the past four decades know that sense of whiplash all too well.

President Trump and McCarthy share a populist, demagogic speaking style and a propensity to say anything to win the moment. The two men are often compared because they both aggressively hit back at their critics and tended to inflate minor slights or partisan rows into threats against the nation. But their similarities go deeper: Both won and cemented support by using, attacking and foiling the news media. Both deployed a crazy quilt of behavior to demand news coverage — and then stomped on those same organizations as disloyal liars conspiring against them. And both enjoyed extended periods of popularity even amid reporting about their erratic behavior and tendency to say things that weren’t true. In the end, McCarthy fell from grace, but journalism alone wasn’t enough to end his destructive crusade. The news reporting about McCarthy’s excesses did over time diminish his popular support, but ultimately that souring of sentiment had to filter up from the public to their elected representatives. It took years, but McCarthy was finally held to account.