It began in 1960 with the Greensboro sit-ins. By 1973, when a few Native Americans rebelled at Wounded Knee and the U.S. Army came home from Vietnam, it was over. In between came Freedom Rides, Port Huron, the Mississippi Summer, Berkeley, Selma, Vietnam, the Summer of Love, Black Power, the Chicago Convention, hippies, Brown Power, and Women's Liberation--The Movement--in an era that became known as The Sixties. Why did millions of Americans become...