Definition
Harry Tyson Moore (November 18, 1905 – December 25, 1951) was a Florida schoolteacher, NAACP organizer, and pioneer of Black voter registration in the South. He founded the Brevard County NAACP in 1934 and, with his wife Harriette, the Progressive Voters' League, registering tens of thousands of Black voters across Florida in the late 1940s.
He was killed on Christmas night 1951 — his 25th wedding anniversary — when a bomb planted beneath his bedroom floor in Mims, Florida exploded. Harriette died nine days later from her injuries. He is generally considered the first NAACP official killed in the civil rights era; no one was ever prosecuted, though a 2006 state investigation named four Klan members as the likely perpetrators.
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Moore was born in Suwannee County, Florida, raised in Houston by aunts after his father's death, and trained as a teacher at Bethune-Cookman. He taught in Brevard County schools from 1925 and became principal of Titusville Colored School in 1936. The NAACP work began as a sideline — Brevard County topic founder in 1934, state field secretary in 1941, executive director of the Florida State Conference of NAACP Branches in 1946.
His method was direct. He filed lawsuits demanding equal pay for Black teachers (winning the first such case in the Deep South, 1937). He documented and publicized every Florida lynching he could trace — at least 26 between 1934 and 1950. He drove from town to town in his Ford organizing NAACP branches and registering voters. The Progressive Voters' League he co-founded with Harriette explicitly targeted the Florida Democratic primary after the Supreme Court's Smith v. Allwright (1944) outlawed the white primary.
His confrontation with Lake County Sheriff Willis V. McCall over the Groveland Four — four young Black men accused on weak evidence of raping a white woman in 1949 — proved fatal. After the Supreme Court ordered new trials, McCall in November 1951 shot two of the defendants while transporting them, killing Samuel Shepherd. Moore publicly called for McCall's indictment and removal. On Christmas night, six weeks later, the bomb went off under his bed.
The case was not closed in his lifetime or in his children's. The FBI's 1952 investigation identified Klan suspects but produced no charges; two of the named suspects committed suicide before any prosecution could be brought. A 2006 Florida Department of Law Enforcement investigation, ordered by Attorney General Charlie Crist, named four Klansmen — all then dead — as the likely conspirators. The case officially remains unsolved.