Salon.com has a great article titled "Outlawing Dissent." (Thanks for the link RG) (subscription only)

Unfortunately, most of it is unavailable due to the "subscription only" thing. This topic is of such importance I think Salon.com should make an exception and make this article available to everyone. And I've told them so -- but I'm not sure it'll do much good. I'll keep an eye out to see if it's reprinted anywhere else.