Preparedness Day parade just prior to the bombing
On July 22, 1916, a bomb explodes during the Preparedness Day parade in San Francisco, kills 10 people and wounding dozens more. The parade was organized by the city's Chamber of Commerce in support of America's possible entrance into World War I.
On July 19, 1879, Doc Holliday commits his first murder, killing a man for shooting up his New Mexico saloon. Despite his formidable reputation as a deadly gunslinger, Holliday only engaged in eight shootouts during his lifetime, and it has only been verified to have killed two men.
On July 18, 1984, James Huberty opens fire in a crowded McDonald's restaurant in San Ysidro, California, killing 21 people and wounding 19 others. Minutes earlier, Huberty had left home, telling his wife, "I'm going hunting... hunting for humans."
On July 17, 2011, Casey Anthony is released from jail in Orlando, Florida, after being acquitted on charges that she killed her 2-year-old daughter. Caylee Anthony was last seen alive with her mother on June 16, 2008, leaving the Orlando home they shared with Casey Anthony’s parents, George and Cindy Anthony. Casey Anthony waited a month to report her daughter missing, and when questioned by police in mid-July, she told them a nanny had kidnapped her daughter. On October 14, 2008, Anthony was indicted on charges of first-degree murder and lying to police. On December 11th of that year, Caylee’s skeletal remains were found in a wooded area less than a mile from George and Cindy Anthony’s house.
On July 16, 1979, Jeffrey MacDonald's murder trial begins in North Carolina. He was accused of the murder of his wife and children which had occurred in 1970. Captain MacDonald, an army doctor stationed at Fort Bragg, made an emergency call to military police in the early morning hours of February 17, 1970. Responding officers found Colette MacDonald and her two children, five-year-old Kimberley and two-year-old Kristen, dead from multiple stab wounds. The word "pig" had been written in blood on the headboard of a bed. Jeffrey, who had a few stab wounds himself, told the officers that four hippies had attacked the family.
On July 15, 1953, John Christie, one of England's most notorious killers, is executed. Four months earlier, on March 25th, police discovered the bodies of four women in a West London apartment. Christie, who used to live at the house, was apprehended a week later and confessed to the murders. One of the dead women had been identified as Christie's wife, Ethel.