The questions people are asking themselves now in Jonesboro, Ark.--How could this happen? What makes kids kill?--are the same questions they were wondering about last year in Pearl, Miss. In October, Luke Woodham, 16, having just stabbed his mother to death, arrived at Pearl High School and opened fire, killing two and wounding seven. Assistant principal Joel Myrick subdued Woodham at gunpoint and held him until police arrived. "I kept asking him, Why, why, why?" Myrick later recalled. "He said, 'Mr. Myrick, the world has wronged me.'"
For as long as there has been childhood, a well-developed sense of grievance has...