70,000 Character Petition

The 70,000 Character Petition (Chinese: 七万言书; Tibetan: ཡིག་འབྲུ་ཁྲི་བདུན་གྱི་སྙན་ཞུ, Wylie: Yig 'bru khri bdun gyi snyan zhu) is a report, dated 18 May 1962, written by the Tenth Panchen Lama and addressed to the Chinese government, denouncing abusive policies and actions of the People's Republic of China in Tibet. It remains the "most detailed and informed attack on China's policies in Tibet that would ever be written." For decades, the content of this report remained hidden from all but the very highest levels of the Chinese leadership, until one copy was obtained by the Tibet Information Network (TIN) in 1996.

Source: Wikipedia — 70,000 Character Petition (CC BY-SA 4.0)