Anne Applebaum: Why Facebook is afraid of Mueller

Who is afraid of special counsel Robert Mueller? President Donald Trump is afraid. So are those who worked on his campaign. But they are not alone.Over the weekend, Rob Goldman made it clear that some of America’s biggest social media companies are scared of Mueller, too. Goldman is Facebook’s vice president for advertising, and according to his Twitter bio, a “student, seeker, raconteur, burner.”On Friday, he took to Twitter to proclaim his company’s innocence. He