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A fire and a gun battle between the Colorado National Guard and striking coal miners led to 17 deaths in the Ludlow Massacre.

Historical image related to A fire and a gun battle between the Colorado National Guard and striking coal miners led to 17 deaths in the Ludlow Massacre. from April 20, 1914

Colorado National Guard

Component of the US Army and military of the state of Colorado

The Colorado National Guard consists of the Colorado Army National Guard and Colorado Air National Guard, forming the state of Colorado's component to the United States National Guard. Founded in 1860, the Colorado National Guard falls under the Colorado Department of Military…
Source: Wikipedia (CC BY-SA)

Ludlow Massacre

April 1914 massacre during the Colorado Coalfield War

The Ludlow Massacre was a mass killing perpetrated by anti-striker militia during the Colorado Coalfield War. Soldiers from the Colorado National Guard and private guards employed by Colorado Fuel and Iron Company (CF&I) attacked a tent colony of roughly 1,200 striking coal…
Source: Wikipedia (CC BY-SA)