“The Nazis were monsters to kill little girls.” “I know that’s what people say,” Mr. Stempel told her. “But most of them weren’t. They were just ordinary people. That’s what makes them so terrifying. Monsters you can fight. But when the people who come for you in the night are your neighbors and coworkers and classmates . . . When you never know who’s sick and who’s not . . .” He shrugged. “Sick?” “Hate is a disease, Dawn.”