Mr. Snowden, the former contractor for the National Security Agency who exposed government spying on citizens, interviewed the novelist via video.
This is a movie that does not dazzle or enrage in its evocation of recent history, but creates a cloud of discomfiting doubt.
A new trailer, a showing of “Snowden” and some unusual swag accompanied Mr. Stone’s appearance.
Beginning this weekend, Mr. Snowden will appear in performances of the play at the Public Theater with Mr. Radcliffe, who plays a writer in the show.
The two will perform in “Privacy” at the Public Theater.
Run. Hide. Live to tell the truth. And hear Joseph Gordon-Levitt’s Edward Snowden accent.