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Calls to pardon Edward Snowden, the former CIA contractor who blew the whistle on the NSA\u2019s secret internet and phone surveillance programs, have increased with the recent release of the \u201cSnowden\u201d movie. As the country once again debates whether Snowden is a traitor or a hero, BackStory takes a look at the changing ways we\u2019ve collected information on each other \u2013 and when it crosses from a matter of national security into something more sinister. (Photo credit: Uncle Sam wants your privacy. Source: Jeff Schuler via Flickr (https://secure.flickr.com/photos/jeffschuler/2585181312/in/set-72157604249628154))\n
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