Direct democracy is the sort of democracy that communist or anarchist societies would strive to acheive. Instead of electing a given authoritive entity to make all other decisions on behalf of the people, each person has membership of the ruling body or government and is able to join in the descision making process on each individual issue. Direct democracy is classically termed "pure democracy".
Lenin was first person to build on Marxist ideas of communism and write about pure democracy. He believed that bourgeois democracy is in fact a dictatorship of bourgeoisie, while dictatorship of the proletariat is the highest possible form of democracy (for those considered the working class) and should use violence against opposing classes.