Paper planes whizzed and dipped and careened into the audience while parents gleefully ducked for cover. At the front of the drab hotel conference room, a man deadpanned, “You all signed a waiver before you came in here?” The speaker, Chris Cardiff, was urging the room of parents to take control over their children’s understanding of American history. His presentation raced through the “competing narratives” that young children faced: “celebrate ‘diversity,’” it went, versus “e pluribus unum.”