May 4, 1970 — At Kent State University a peaceful noontime rally of some 2,000 students was ordered to disburse by National Guardsmen. Tear gas was fired and guardsmen charged into the crowd. At 12:20 p.m., a small group of guardsmen suddenly wheeled and unleashed a 13-second volley of gunfire. They fired into a group of protesters, killing four and wounding from 9 to 11 others. One wounded student was crippled for life with damage to his spinal column. In the days that followed, hundreds of colleges were shut down by student strikes and more than 100,000 demonstrators marched on Washington, D.C. Twenty-five years after the event the National Guard insisted that it was provoked into attacking the students contrary to eye-witnesses, photographs, and later investigation.