In June 1981, at the 6th Plenary Session of the 11th Central Committee of CCP, the Communist Party unanimously passed a resolution drafted by Deng and others which comprehensively invalidated the Cultural Revolution, calling it "a domestic havoc launched mistakenly by the leader (Mao Zedong) and taken advantage of by the counter-revolutionary gangs (Lin Biao and the Gang of Four)" and that it "was responsible for the most severe setback and the heaviest losses suffered by the Party, the country, and the people since the founding of the People's Republic".[1][50][51][52]