McCarthyism describes an event in American history where a Senator claimed to have in his briefcase evidence that high-ranking government officials were colluding with Russia. Lives were destroyed based solely on the accusation. Finally, when people had had enough, the attorney representing the U.S. Army turned to the Senator and said, “Have you no sense of decency, sir, at long last?” That ended it. The present Russian investigation hit its “have you no sense of decency” moment last week when Robert Mueller indicted 13 Russians for defrauding America. By all appearances, they are the sort of unsophisticated internet trolls who,...