Former New York Times editorial board member Adam Cohen, who once served as lawyer for the discredited Southern Poverty Law Center, reviewed Washington Post columnist Ruth Marcus’s book on the Brett Kavanaugh nomination. (The book’s title gives the slant away: “Supreme Ambition -- Brett Kavanaugh and the Conservative Takeover.”) Cohen’s review unloaded a cheap shot in the text box: “‘If you had asked me who was the biggest drinker in our class I would have said Brett,” one classmate said.” Anonymous hearsay? Now there’s some hard...