NEW YORK, NY - APRIL 11:  Investigative reporter Glenn Greenwald, who worked with National Security Agency leaker Edward Snowden, accepts the George Polk Award along side Laura Poitras, Ewan MacAskill and Barton Gellman, for National Security Reporting on April 11, 2014 in New York City. Greenwald, Poitras and MacAskill reported on the story for The Guardian; Gellman wrote for The Washington Post. This is the first time Greenwald and Poitras have returned to the United States since the story broke.  (Photo by Andrew Burton/Getty Images)