For any of you interested in history, here's a little more background:
(From The Far Queue): "Reality Czech"
"People will agree with you only if they already agree with you. You do not change people's minds. "
-Frank Zappa 1940-1993
[via Boing Boing, Frank Zappa's anti-censorship letter
[Boing Boing also searched out that the scanned letter, including its hand-addressed envelope, is available on Flickr