Americans expelled from China for Olympic protests speak about their fears and loss of control during interrogation
Beijing's "protest parks" are empty and unused, and activists say demonstrations are overtly discouraged. Police say it's because there is a good 'social environment'; a lone protester in Ritan park has another story to tell.
Taxis in Beijing and other Chinese cities get high-tech security and surveillance equipment, including live microphones capable of transmitting audio from within the vehicle to a central monitoring station.
Key rights advocates and social activists across China will spend the Olympics confined to their homes under round the clock surveillance. Some have been warned off talking to the media, while others cannot be reached by phone.