article_snippet: NSA whistleblower Edward Snowden.
article_snippet: from documents released by NSA whistleblower Edward SnowdenEdward Snowden.
article_snippet: editors include Glenn Greenwald, who won a Pulitzer Prize for .
article_snippet: his work in reporting on NSA whistleblower Edward Snowden's revelations, and by .
article_snippet: Oscar-winning documentary maker Laura Poitras.
article_snippet: revealed by Snowden in 2013.