On February 6, 1973, AIM members confronted authorities at the Custer County Courthouse in South Dakota after prosecutors charged the white killer of Wesley Bad Heart Bull, a young Lakota man stabbed to death outside a bar, with only second-degree manslaughter. When officials refused to meet the family, fighting broke out with riot police and the courthouse annex burned. Dozens were arrested — among them Wesley's grieving mother, Sarah Bad Heart Bull.
The prosecutions that followed became a movement scandal: Sarah Bad Heart Bull was sentenced to one to five years for "riot" and served months in prison, while her son's killer never served a day for the killing. Custer radicalized the region's Lakota communities three weeks before Wounded Knee, and its defendants were among the first of the era's AIM political prisoners.