Edward Snowden's Christmas Message
youtube.com
youtube.com
Pardoning him would set a precedent indicating leaking top-secret documents when you think you have a higher moral purpose is an 'acceptable' thing to do. I'm wholly on Snowdens side in these particular circumstances, but even his case is, sadly, subjective. I believe knowing you could lose your freedom is a healthy filter to ensure people act as responsibly as possible.
I think that's the most important part of his message.