The worst case of mass murder in the U.S. at the time occurred on July 18, 1984. The shooter entered a crowded McDonald's restaurant in San Ysidro, California and killed 21 men, women and children before the siege was over.
San Diego police escort McDonald employees out of the restaurant after a shooter killed 21 employees and customers in 77 minutes.
#massmurderers #SanYsidroMcDonaldsMassacre
