A progression from feudalism. But in capitalist societies religion is still a part of the superstructure through which the bourgeoisie rules. So although the clergy is greatly weakened and the “divine right” of kings is abolished, the state and religion are only formally separated. But still connected in a sense. Therefore the proletarian state must also endevour to encourage internationalist, proletarian strains of religions over bourgeois ones in whichever measures are appropriate at a given time.