From the US Campaign for Burma :

 

China is paralyzing UN Security Council action on Burma. They are the main economic, military, and political supporters of the military junta. For fifteen years China has refused to press its closest ally to allow its people human rights, and used its veto power to block the UN Security Council from acting. As a result, the UN is making the same mistakes it made on Darfur and Rwanda. We are calling on people of conscience throughout the world to boycott the 2008 Chinese Olympics, join our efforts.