NSA Whistleblower William Binney Explains NSA Surveillance

National Security Agency whistleblower William Binney explains how the secretive agency run its pervasive domestic spying apparatus in a new piece by Laura Poitras in The New York TImes.

Binney—one of the best mathematicians and code breakers in NSA history—worked for the Defense Department's foreign signals intelligence agency for 32 years before resigning in late 2001 because he "could not stay after the NSA began purposefully violating the Constitution."

In a short video called "The Program," Binney explains how the agency took part of one of the programs he built and started using it to spy on virtually every U.S. citizen without warrants under the code-name Stellar Wind.

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