The Richest American Family Hired Terrorists to Shoot Sleeping Families

The incident, known as the Ludlow Massacre, occured in April of 1914, and it sparked a 10-day battle in the coalfields of the American West. It was the bloodiest episode in the history of American class conflict, and the closest thing to war between compatriots since the Confederacy was defeated a half-century earlier.

Source: timeline.com