Steven Howell realized how important it is to teach the Holocaust when he encountered anti-Semitism in his own classroom.He had just begun teaching at James A. Garfield High School, a small rural school in Garettsville, Ohio, when he found that the students had not read The Diary of Anne Frank. He taught them the historical context of the book, which they knew little about, but after two weeks he walked into his classroom to find a cross with two swastikas, on which was printed “Back off.”