<p>THIRTY-FOUR YEARS AGO this fall, a small band of well-educated young Americans hell-bent on storming heaven steeled themselves to commit an act of spectacularly gratuitous violence. A militant breakaway faction of Students for a Democratic Society, they called themselves the Weathermen. Their strategy, such as it was, blended theatrical bravado with puritanical zeal -- Bonnie and Clyde meet John Brown. Wearing crash helmets and wielding baseball bats, ululating like the revolutionaries they had studied on screen in "The Battle of Algiers," they would run wild in the streets of Chicago, lashing out at any available symbol of privilege and power: police, parked cars, affluent bystanders.</p>