The highlight, at least for some television watchers, of the first day of the Senate Judiciary Committee hearings on the nomination of Judge Brett Kavanaugh to the Supreme Court, came when the young woman seated directly behind the nominee rested her right hand on her opposite elbow and pressed her index fingertip against her thumb, forming a kind of circle or OK sign. The meaning of this gesture was not lost on certain alert viewers. "Who is she? What's up with the white power sign?" tweeted one Keith R. Dumas, quoted by the Daily Caller. Elucidating tweets streamed in. From...