Richard Stallman is the most conscientious and tireless person in tech. I just found that he frequently updates a list of outside-the-bubble news items and links to editorials. Totally worth bookmarking. (Link.)
Often when Stallman is brought up, people often express both respect and the criticism that he takes his beliefs too far or too literally. This reminds me somewhat of comments I've heard musicians make about Fugazi. Something like, "It's admirable to demand a $5 door charge, but sometimes you need to play the game."
Anyway here's link to a good software freedom talk that RMS gave. (Link.)