Tan Tianrong (C), a physics student from Peking University is surrounded by other students. He was labeled as a "Major Rightist" for his criticism of Mao Zedong's article "The Historical Experience of the Proletariat Dictatorship" during the Anti-Rightist Movement. Tan was put into a re-education center before being sent back to his hometown in November, 1969 when China was preparing for an attack by the USSR. [Photo/Sina]