State-ownership of the productive forces is not the solution of the conflict, but concealed within it are the technical conditions that form the elements of that solution". This has led some Marxist groups and tendencies to label states based on nationalization such as the Soviet Union as state capitalist. Leninism is the body of political theory, developed by and named after the Russian revolutionary and later-Soviet premier Vladimir Lenin, for the democratic organisation of a revolutionary vanguard party and the achievement of a dictatorship of the proletariat as political prelude to the establishment of socialism. Leninism comprises socialist political and economic theories developed from orthodox Marxism as well as Lenin's interpretations of Marxist theory for practical application to the socio-political conditions of the agrarian, early-20th-century Russian Empire. Leninism was composed for revolutionary praxis and originally was neither a rigorously proper philosophy nor a discrete political theory. After the Russian Revolution and in "History and Class Consciousness: Studies in Marxist Dialectics" (1923), György Lukács developed and organised Lenin's pragmatic revolutionary practices and ideology into the formal philosophy of vanguard-party revolution. As a political-science term, "Leninism" entered common usage in 1922 after infirmity ended Lenin's participation in governing the Russian Communist Party. At the Fifth Congress of the Communist International in July 1924, Grigory Zinoviev popularized the term "Leninism" to denote "vanguard-party revolution". Within Leninism, democratic centralism is a practice in which political decisions reached by voting processes are binding upon all members of the communist party. The party's political vanguard is composed of professional revolutionaries that elect leaders and officers as well as to determine policy through free discussion, then this is decisively realized through united action. In the context of the theory of Leninist revolutionary struggle, vanguardism is a strategy whereby the most class-conscious and politically advanced sections of the proletariat or working class, described as the revolutionary vanguard, form organizations in order to draw larger sections of the working class towards revolutionary politics and serve as manifestations of proletarian political power against its class enemies. From 1917 to 1922, Leninism was the Russian application of Marxian economics and political philosophy, effected and realised by the Bolsheviks, the vanguard party who led the fight for the political independence of the working class. In the 1925–1929 period, Joseph Stalin established his interpretation of Leninism as the official and only legitimate form of Marxism in Russia by amalgamating the political philosophies as Marxism–Leninism which then became the state ideology of the Soviet Union.