Over the weekend I was browsing through the New Releases on Netflix and stumbled upon an incredible and eye opening documentary called "A Good American". It is about a man named Bill Binney, the September 11, 2001 terrorist attack on the World Trade Center buildings, and how the National Security Office (NSA) evolved over the years leading up to it and the years after the attack. The story I encourage everyone to check this documentary out.
Here is a quick exert from the website:
Bill Binney was a brilliant cryptologist and long-time National Security Agency (NSA) analyst, since 1997 serving as Technical Director. Binney developed a sophisticated program named ThinThread for gathering data capable of providing clues, in real-time, of potential terrorist threats.