Over the decades, several Chinese dissidents have criticized the Communist Party and have been detained by China or exiled in the United States.
Fang Lizhi Fang Lizhi lived in forced exile in Tucson and taught quantum theory at the University of Arizona. He took refuge at the U.S. embassy following the Tiananmen disturbance and was put on the No. 1 enemies list of Deng Xiaoping. Fang died on April 6, 2012. John B. Carnett/Popular Science via Getty Images Buy Photo