On a frigid, windy night in Washington, a couple hundred people trekked to the Newseum for a vigil for the murdered French journalists from the Parisian weekly Charlie Hebdo, the police that died trying to protect them, and those that were wounded. The gathering started off small, with maybe 15 or so trying to stay warm. But as the group grew, the organizers moved the participants inside the Newseum, where those without "Je Suis Charlie" signs were provided with one. The huge Jumbotron inside the Newseum bore the same message. After a few minutes, a hundred or so participants lined...