I just watched the movie and then did some research regarding if it was accurate. In an interview Edward Snowden confirmed that it was mostly factually correct. I will leave it to others to decide if the man is a patriot or a traitor. 

If you ever had any sense that you have any privacy in your life then I encourage you to watch this movie. While I personally have absolutely nothing to hide I am appaled and slightly terrified at the degree of intrusion into our personal lives. 

Yes, I put a piece of tape over the camera on my devices.