I am ashamed to say that I had never heard about this until now:
In what became known as the Brooks and Loundes Counties lynchings (in south-central Georgia near the Florida border), a mob killed Mary Turner for "loudly proclaiming her husband's innocence." The pregnant woman was hanged by her feet, gasoline was thrown on her clothing, and she was set on fire. "Her body was cut open and her infant fell to the ground, to be crushed to death by the heel of one of the white men present." The mother's body was then "riddled with bullets" according to NAACP reports. . . Although the NAACP publicized these events and provided Governor Hugh M. Dorsey with the names of two leaders and fifteen participants in the mob, state officials acted with indifference, and none of the killers was prosecuted.