The expression rotten liberalism (Russian: гнилой либерализм, gniloy liberalizm) was introduced by Saltykov-Shchedrin in 1875 in the meaning of lack of principles, unscrupulousness. See "Большой словарь русских поговорок" (2007). Great Dictionary of Russian Proverbs.
marxists.org
Thesis and Report on Bourgeois Democracy and the Dictatorship of the Proletariat (4 March 1919). "Address to the Comintern". "The main thing that Socialists fail to understand—which constitutes their shortsightedness in matters of theory, their subservience to bourgeois prejudices, and their political betrayal of the proletariat—is that in capitalist society, whenever there is any serious aggravation of the class struggle intrinsic to that society, there can be no alternative but the dictatorship of the bourgeoisie or the dictatorship of the proletariat".
Stalin, J. V. (1954) [April 1929]. "The Right Deviation in the C.P.S.U.(B.)". Works. Vol. 12, April 1929 - June 1930. Moscow: Foreign Languages Publishing House. pp. 1–113.
