Ludlow Massacre

The Ludlow Massacre was a massacre perpetrated by anti-striker militia during the Colorado Coalfield War. The Colorado National Guard and Colorado Fuel and Iron Company guards attacked a tent colony of 1,200 striking coal miners and their families in Ludlow, Colorado, on April 20, 1914, with the National Guard using machine guns to fire into the colony. Approximately 21 people, including miners' wives and children, were killed. The chief owner of the mine, John D. Rockefeller, Jr., was widely excoriated for having orchestrated the massacre.
The massacre, the seminal event of the Colorado Coal Wars, resulted in the deaths of an estimated 21 people; accounts vary. Ludlow was the deadliest single incident in the southern Colorado Coal Strike, which lasted from September 1913 to December 1914. The strike was organized by the miners against coal mining companies in Colorado. The three largest companies involved were Colorado Fuel & Iron Company, owned by the powerful Rockefeller family; Rocky Mountain Fuel Company, and Victor-American Fuel Company.

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