The bulwark against tyranny is dissent. Open opposition, the right to challenge those in power, is a mainstay of any healthy democracy. The Democratic and Republican conventions will test the commitment of the two dominant U.S. political parties to the cherished tradition of dissent. Things are not looking good.

Denver's CBS4 News just reported that the city is planning on jailing arrested Democratic convention protesters at a warehouse with barbed-wire-topped cages and signs warning of the threat of stun gun use. Meanwhile, a federal judge has ruled that a designated protest area is legal, despite claims that protesters will be too far from the Democratic delegates to be heard.

...For now, the eyes of the world are on the Beijing Olympics. Sportswriter Dave Zirin is reporting on the suppression of protests that are occurring there. He has an interesting perspective, as he is a member of the anti-death-penalty group infiltrated in Maryland. He told me, "Our taxpayer dollars went to pay people to infiltrate and take notes on our meetings, and it's absolutely enraging ... a lot of this Homeland Security funding is an absolute sham ... it's being used to actually crush dissent, not to keep us safer in any real way." The lack of freedom of speech in China is getting a little attention in the news. But what about the crackdown on dissent here at home? Dissent is essential to the functioning of a democratic society. There is no more important time than now.