This month’s massacre of disarmed students and faculty at Virginia Tech was preordained and takes me back to my experience with the violent mentally ill. My brother worked in Vermont’s Waterbury Mental Hospital in the 70s and 80s. He worked to keep some sense of order among the wing housing the criminally insane. At 5’ 5” and 145 pounds, he seemed a strange pick to work with violent, 200-pound psychopaths and he had fractures and lacerations too numerous to count. But he was more successful in reaching these deranged inmates than most other staffers so he was kept at...