One reason many Americans don’t trust the media is because they treat every Donald Trump outburst as a Defcon 1 level threat to the survival of the republic. The latest example is the panic over Mr. Trump’s legal threat to the publisher of Michael Wolff’s book and his lament that libel laws are too weak.

Mr. Trump had his lawyer send a letter on Thursday to Henry Holt demanding that it “cease and desist” publication of Mr. Wolff’s book. This is a longstanding Trump tactic designed to underscore his claims that a book or article...