Check most memorable events May 1970 AD in United States of America.
Further protests erupted against what was perceived as an expansion of the conflict, and the unrest escalated to violence when Ohio National Guardsmen shot and killed four unarmed students on May 4.
Further protests erupted against what was perceived as an expansion of the conflict, and the unrest escalated to violence when Ohio National Guardsmen shot and killed four unarmed students on May 4.