"Democracy and dictatorship of the proletariat are two parts of the same antithesis, and proletarian democracy is far superior to its capitalist counterpart. We are emphasizing the Four Principles that we must adhere to: the principle of socialism, the principle of dictatorship of the proletariat, the principle of Marxism and Leninism elaborated in Mao Zedong Thought, and the principle of leaders supported by the Communist Party of China. So, you see, that even the principle of dictatorship of the proletariat has remained untouched and untouchable."
January 1, 1970
https://en.wikiquote.org/wiki/Deng_Xiaoping