This 1914 photo provided by the Denver Public Library, Western History Collection, shows children and some adults posing for a photo at camp Ludlow in south central Colorado. Two women and 11 children died in a fire at the camp during a battle between the Colorado National Guard and striking coal miners. Sunday April 20, 2014 is the 100th anniversary of the Ludlow Massacre. (AP Photo/Denver Public Library, Western History Collection)
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