William Mouse Droneneburg, a 32-year-old white male, was killed on July 4, 1979, at the Outlaws Motorcycle Club clubhouse on Allen Road in Charlotte, North Carolina. He was one of five people shot dead while they were sleeping; two suspects used a 9mm and a .223 semiautomatic and completed the attack in less than 15 seconds. The crime was discovered when William Kincaid Chains Flamont, the Outlaws’ leader, arrived at the clubhouse early that morning and found the bodies.

Investigators believed the attackers were members of the rival Hell’s Angels, amid high tensions between the groups, though some locals suspected disgruntled Outlaws. No arrests had been made and the case remained unsolved. The massacre drew hundreds of Outlaws to the funerals and left lasting divisions in the motorcycle community.