Reason has a really cool article about the link between science fiction and libertarians. It's couched around an amazing article about publisher Tor.
My favorite quote:
"Scratch a civil libertarian, and you’ll often find a 15-year-old who read a lot of Philip K. Dick. Ask a college guy protesting censorship at his student newspaper for his inspirations, and there’s a good chance Ray Bradbury’s Fahrenheit 451 will come up. Meet someone who thinks there might be an upside to anarchy, and you have probably found a girl who once read Ursula K. LeGuin’s The Dispossessed or a boy who loved Neal Stephenson’s Snow Crash. "
Here's the article: