Please tell your barber, sister-in-law, coffee buddy, or next-door neighbor about it. Tell them why it's important.
EDIT: To the comments below that say that the average person knows but doesn't care: I think you've been speaking with significantly better informed people than the average. Really, my experience has been that the average person has never heard the name Snowden, let alone knows about the revelations. (I might even try an informal poll of people I meet up with, and report back.) That they might not care once they hear the story is a sad, but separate issue.