The definition of rightists was not always consistent, often including critics to the left of the government, but officially referred to those intellectuals who appeared to favour capitalism, or were against one-party rule as well as forcible, state-run collectivization. According to China's official statistics published during the " Boluan Fanzheng" period, the anti-rightist campaign resulted in the political persecution of at least 550,000 people. Some researchers believe that the actual number of persecuted is between 1 and 2 million or even higher. Deng Xiaoping admitted that there were mistakes during the Anti-Rightist Campaign, and most victims have received rehabilitation since 1959.