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Nineteen men, women, and children participating in a strike are killed in the Ludlow Massacre during the Colorado Coalfield War.

Historical image related to Nineteen men, women, and children participating in a strike are killed in the Ludlow Massacre during the Colorado Coalfield War. from April 20, 1914

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)

Colorado Coalfield War

1913–1914 labor uprising

The Colorado Coalfield War was a major labor uprising in the southern and central Colorado Front Range between September 1913 and December 1914. Striking began in late summer 1913, organized by the United Mine Workers of America (UMWA) against the Rockefeller-owned Colorado Fuel…
Source: Wikipedia (CC BY-SA)

April 20

Day of the year

April 20 is the 110th day of the year in the Gregorian calendar; 255 days remain until the end of the year.
Source: Wikipedia (CC BY-SA)