The real purpose of the Espionage Act.

The history behind current events.
Dec. 27 2010 8:47 AM

The Hidden History of the Espionage Act

The much-maligned 1917 law had a real purpose—stopping spies and saboteurs.

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David Greenberg, a professor of history and of journalism and media studies at Rutgers University, has written for Slate since 1996. He is the author of several books of political history.