Here’s the first trailer for Citizenfour

These Are the Emails Snowden Sent to First Introduce His Epic NSA Leaks:
Six months before the world knew the National Security Agency’s most prolific leaker of secrets as Edward Joseph Snowden, Laura Poitras knew him as Citizenfour. For months, Poitras communicated with an unknown “senior government employee” under that pseudonym via encrypted emails, as he prepared her to receive an unprecedented leak of classified documents that he would ask her to expose to the world.