The filmmaker Laura Poitras profiles William Binney, a 32-year veteran of the National Security Agency who helped design a top-secret program he says is broadly collecting Americans’ personal data:

Laura Poitras is a documentary filmmaker who has been nominated for an Academy Award and whose work was exhibited in the 2012 Whitney Biennial. She is working on a trilogy of films about post-9/11 America. This Op-Doc is adapted from a work in progress to be released in 2013.