On April 20, 1914, the Colorado National Guard attacked a tent colony of 1,200 striking coal miners and their families in Ludlow, Colorado. An estimated two dozen people were killed, including young children.
Known as the Ludlow Massacre, Howard Zinn described its importance and obscurity in The Politics of History:
The culminating act of perhaps the most violent struggle between corporate power and laboring men in American history. Despite five thousands pages of testimony, taken at the time by Congressional investigating bodies, it remains an obscure event, rarely mentioned in textbooks on American history.
As Zinn explains in the video clip below, he first learned of the Ludlow Massacre from a song by Woody Guthrie.
The video clip is from the documentary film, Howard Zinn: You Can’t Be Neutral on a Moving Train.
Read more about the Ludlow Massacre in an excerpt by Howard Zinn from A People’s History of the United States.