HEMPSTEAD, N.Y. Another debate, another debacle for America’s media. In the runup to the second presidential debate, CNN’s Candy Crowley declared that she would not just be a “fly on the wall” as she played the tiny role of moderator, that she would step in whenever she chose to say, “Hey, wait a second, what about X, Y, Z?” And boy did she, cutting off Republican Mitt Romney repeatedly and often throwing the floor to President Obama with an open “let me give the president a chance here.” More, she alone decided the topics for the debate, picking questions from...