Lynching of Laura and L. D. Nelson
Laura and L. D. Nelson were an African-American mother and son who were lynched on May 25, 1911, near Okemah, Okfuskee County, Oklahoma. They had been seized from their cells in the Okemah county jail the night before by a group of up to 40 white men, reportedly including Charley Guthrie, father of the folk singer Woody Guthrie.
Source: Wikipedia — Lynching of Laura and L. D. Nelson (CC BY-SA 4.0)