A bomb explodes at the home of Harry T. Moore and Harriette V. S. Moore, early leaders of the Civil Rights Movement, killing Harry instantly and fatally wounding Harriette.

Harry T. Moore and his wife, Harriette V. S. Moore, were pioneer activists and leaders of the early Civil Rights Movement in the United States and became the first martyrs of the movement. On the night of Christmas, December 25, 1951, a bomb that had been planted under the bedroom floor of the Moores' home in Mims, Florida, exploded. They had celebrated their 25th wedding anniversary earlier that day. Harry died in the ambulance in transit from the attack, and Harriette died from her injuries nine days later, on January 3, 1952. Their deaths were the first assassination of any activist to occur during the Civil Rights Movement and the only time that a husband and wife were killed during the history of the movement.

Harry Tyson Moore was an African-American educator, a pioneer leader of the civil rights movement, founder of the first branch of the National Association for the Advancement of Colored People (NAACP) in Brevard County, Florida, and president of the state chapter of the NAACP.

Harriette Vyda Simms Moore was an American educator and civil rights worker. She was the wife of Harry T. Moore, who founded the first branch of the National Association for the Advancement of Colored People (NAACP) in Brevard County, Florida. The murder of the Moores was the first assassination to happen during the Civil Rights Movement and the only time both a husband and a wife were killed for their activism.