The Washington Post’s Chris Cillizza is troubled by a new Gallup poll finding: “Just four in 10 Americans say they have a ‘great deal’ or a ‘fair amount’ of trust in the media to report the news fairly and accurately. . . . That matches historic lows the media also ‘achieved’ in 2012 and 2014.” For this he blames “partisans—whether in politics or in the media—who have a vested interest in casting the press as hopelessly biased.”

We’ll cut to his conclusion: “Whether you like or agree with an independent media all the time...