The Ludlow Massacre began on the morning of April 20, 1914, when a battle broke out between the Colorado National Guard and striking coal miners at their tent colony outside of Ludlow in Las Animas County. Nobody knows who fired the first shot, but the…

The United Mine Workers of America (UMWA) formed in 1890 to fight for better pay and working conditions for the nation’s coal miners. In Colorado the union was most active in the early twentieth century, with thousands of members joining strikes in the…