Maybe the book is unfamiliar (whatever happened to the classics?), or maybe they heard something about it from a talk show host (why fill kids' heads with dark thoughts?), or maybe their minister (or priest, or rabbi, or imam) bemoans the state of teen culture (why expose them to bad role models?). But there are also many well-intentioned parents who have been told that good parenting means constant vigilance to "protect" kids. The end result is a never-ending assault on books in school that contain anything that someone finds controversial, provocative, unpleasant, or offensive.