A Pennsylvania woman set out with a video camera to learn what college students in her state know about the Holocaust — and discovered an incredible lack of knowledge not only of the genocide of the Jews, but of basic facts about U.S. history and World War II. Rhonda Fink-Whitman visited college campuses in Pennsylvania this fall, including the venerated Ivy League institution the University of Pennsylvania, where she was repeatedly faced with a remarkable ignorance about events that took place in the last century. Students didn’t know where Normandy was, why U.S. forces landed there, why the U.S. even...