The worst incident in the US labor history was the West Virginia Mine War of 1920–21 (Savage 1990), which culminated in the Battle of Blair Mountain (Shogan 2004). Although it started as a labor dispute, it eventually turned into the largest armed insurrection in US history, other than the Civil War. Between 10,000 and 15,000 miners armed with rifles fought thousands of strike-breakers and sheriff’s deputies, called the Logan Defenders. The insurrection was ended by the United States Army.
