In the popular middle-grade novel, Blubber, author Judy Blume relates a truly heartbreaking story of a group of bored fifth graders suddenly taking to tormenting one of the girls in their class. In a space vacated by indifferent and lifestyle-preoccupied adults, Wendy, a shrewd fifth grader, directs a clique of classroom tastemakers to expand a private joke into methodical humiliation of a classmate. Linda, the bullying victim, is introverted, plain, and chubby, having done nothing to....