“Hence the three main aspects of the dictatorship of the proletariat.
1) The utilisation of the rule of the proletariat for the suppression of the exploiters, for the defence of the country, for the consolidation of the ties with the proletarians of other lands, and for the development and victory of the revolution in all countries.
2) The utilisation of the rule of the proletariat in order to detach the labouring and exploited masses once and for all from the bourgeoisie, to consolidate the alliance of the proletariat with these masses, to draw these masses into the work of socialist construction, and to ensure the state leadership of these masses by the proletariat.
3) The utilisation of the rule of the proletariat for the organisation of socialism, for the abolition of classes, for the transition to a society without classes, to a socialist society.
The proletarian dictatorship is a combination of all these three aspects. No single one of these aspects can be advanced as the sole characteristic feature of the dictatorship of the proletariat. On the other hand, in the circumstances of capitalist encirclement, the absence of even one of these features is sufficient for the dictatorship of the proletariat to cease being a dictatorship. Therefore, not one of these three aspects can be omitted without running the risk of distorting the concept of the dictatorship of the proletariat. Only all these three aspects taken together give us the complete and finished concept of the dictatorship of the proletariat.”
– J.V. Stalin, “Concerning Questions of Leninism”