"In the years immediately preceding the Cultural Revolution, Mao arrived at a conclusion that no other Marxist in power had hitherto been willing to entertain. A socialist society, he now believed, could generate a new class of exploiters; the main barriers to the "transition to socialism" were not the bourgeois residues of the past but rather the bureaucrats of the present, the onetime revolutionaries whom the revolution had transformed into rulers and who by virtue of their political power controlled the new society and appropriated much of the fruits of social labor in the process. On occasion Mao was quite explicit, indeed blunt, in setting forth this view; as when (in 1965) he condemned "the bureaucratic class" as a class "in sharp opposition to the working class and the poor and lower-middle peasants," as those becoming "bourgeois elements sucking the blood of the workers." Nor did he hesitate to identify the site and source of these "new bourgeois elements" or their leaders. They were, he charged on the eve of the Cultural Revolution, "those people in positions of authority-within the Party who take the capitalist road." What seemed at the time to be pure ideological bombast proved to be a remarkably accurate prognosis of the future of Chinese Communist society."
January 1, 1970
https://en.wikiquote.org/wiki/Mao_Zedong