On August 28, 1955, fourteen-year-old Chicago native Emmett Till was brutally beaten to death for allegedly flirting with a white woman at a grocery store in Money, Mississippi. Roy Bryant and J. W. Milam were acquitted of murdering Till and dumping his body in the Tallahatchie River, and later that year, an all-white grand jury chose not to indict the men on kidnapping charges. A few months later, Bryant and Milam admitted to the crime in an interview with the national media. They were never convicted.

Although Till's body was mutilated, his mother ordered that his casket remain...