Jameel Jaffer, deputy legal director of the American Civil Liberties Union, listens during a hearing of the Senate Judiciary Committee on Capitol Hill, in July 2013. Brendan Smialowski/AFP/Getty Images hide caption

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Brendan Smialowski/AFP/Getty Images

Outgoing ACLU Director Reviews Tenure Fighting National Security Battles

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FBI Director James Comey is one of the federal officials who has said that the growing use of encryption hurts the ability to track criminals. Keith Srakocic/AP hide caption

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Keith Srakocic/AP

In this photo taken in 2011, worshippers are pictured inside the Al-Iman Mosque after midday prayers in the Queens borough of New York. The NYPD disbanded the special unit tasked with carrying out surveillance of Muslim groups in 2014 Charles Dharapak/Associated Press hide caption

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Charles Dharapak/Associated Press

Court Documents Show How NSA Leaned On Yahoo, How Yahoo Fought Back

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The National Security Agency says its massive new data center near Salt Lake City will enhance the agency's ability to analyze the email, text message, cellphone and landline metadata it collects. Rick Bowmer/AP hide caption

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Rick Bowmer/AP

Booting Up: New NSA Data Farm Takes Root In Utah

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A promotional image from Renew shows one of its recycling/advertising kiosks in London. City officials asked the company to stop recording data about the phones of passing pedestrians. Renew hide caption

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Renew

Protesters demonstrate in Berlin on Tuesday on the eve of President Obama's visit to the German capital. Obama is expected to encounter a more skeptical Germany in talks on trade and secret surveillance practices. Odd Andersen /AFP/Getty Images hide caption

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Odd Andersen /AFP/Getty Images