The 6521 Project, sometimes called the "6521 Group," was the moniker given to a nationwide operation initiated by the Communist Party of China in 2009 to ensure “social stability” by cracking down on potential dissidents during anniversaries of political significance. The digits in the campaign’s name are a reference to the 60th anniversary of the founding of the People’s Republic of China, the 50th anniversary of the 1959 Tibetan uprising, the 20th anniversary of the Tiananmen Square protests, and the 10th anniversary of the persecution of Falun Gong.
The 6521 Project was initiated as a top-level committee by the Communist Party, and was reportedly headed by Xi Jinping, current General Secretary of the Communist Party of China.
Under the campaign, all provinces and municipalities were required to establish temporary 6521 taskforces under the local Communist Party and Public Security leadership. Authorities at the township and county levels were also required to implement the 6521 project, reporting on their progress to municipal or provincial taskforces above them.