Mao did not subscribe to Marx's theory of inevitable cyclicality in the economic system. His goal was to unify the Chinese nation and so realise progressive change for China in the form of communism; hence, a revolution was needed at once. In The Great Union of the Popular Masses (1919), Mao wrote that "[t]he decadence of the state, the sufferings of humanity, and the darkness of society have all reached an extreme". After Mao Zedong's death China Shortly after Mao died in 1976, Deng Xiaoping initiated socialist market reforms in 1978, thereby beginning the radical change in Mao's ideology in the People's Republic of China (PRC). Although Mao Zedong Thought nominally remains the state ideology, Deng's admonition to "seek truth from facts" means that state policies are judged on their practical consequences, and in many areas, the role of ideology in determining policy has thus been considerably reduced. Deng also separated Mao from Maoism, making it clear that Mao was fallible, and hence the truth of Maoism comes from observing social consequences rather than by using Mao's quotations as holy writ, as was done in Mao's lifetime. Contemporary Maoists in China criticise the social inequalities created by the revisionist Communist Party. Some Maoists say that Deng's Reform and Opening economic policies that introduced market principles spelled the end of Maoism in China. However, Deng asserted that his reforms were upholding Mao Zedong Thought in accelerating the output of the country's productive forces. A recent example of a Chinese politician regarded as neo-Maoist in terms of political strategies and mass mobilisation via red songs was Bo Xilai in Chongqing. In addition, the party constitution has been rewritten to give the socialist ideas of Deng prominence over those of Mao. One consequence of this is that groups outside China that describe themselves as Maoist generally regard China as having repudiated Maoism and restoring capitalism, and there is a broad perception both inside and outside China that China has abandoned Maoism. However, while it is now permissible to question the particular actions of Mao and talk about excesses taken in the name of Maoism, there is a prohibition in China on either publicly questioning the validity of Maoism or whether the current actions of the CCP are "Maoist". Although Mao Zedong Thought is still listed as one of the Four Cardinal Principles of the People's Republic of China, its historical role has been