Encyclopedia Brittanica:
in Marxism, rule by the proletariat—the economic and social class consisting of industrial workers who derive income solely from their labour—during the transitional phase between the abolition of capitalism and the establishment of communism. During this transition, the proletariat is to suppress resistance to the socialist revolution by the bourgeoisie, destroy the social relations of production underlying the class system, and create a new, classless society.
Rosa Luxemburg:
This dictatorship consists in the manner of applying democracy, not in its elimination, but in energetic, resolute attacks upon the well-entrenched rights and economic relationships of bourgeois society, without which a socialist transformation cannot be accomplished. This dictatorship must be the work of the class and not of a little leading minority in the name of the class – that is, it must proceed step by step out of the active participation of the masses; it must be under their direct influence, subjected to the control of complete public activity; it must arise out of the growing political training of the mass of the people.
Marx/Engels:
Freedom consists in converting the state from an organ superimposed upon society into one completely subordinate to it; and today, too, the forms of state are more free or less free to the extent that they restrict the "freedom of the state".
Between capitalist and communist society there lies the period of the revolutionary transformation of the one into the other. Corresponding to this is also a political transition period in which the state can be nothing but the revolutionary dictatorship of the proletariat.
There you go, now you actually have things to base your arguments around.
