What will be the influence of communist society on the family?

It will transform the relations between the sexes into a purely private matter which concerns only the persons involved and into which society has no occasion to intervene. It can do this since it does away with private property and educates children on a communal basis, and in this way removes the two bases of traditional marriage – the dependence rooted in private property, of the women on the man, and of the children on the parents. And here is the answer to the outcry of the highly moral philistines against the “community of women”. Community of women is a condition which belongs entirely to bourgeois society and which today finds its complete expression in prostitution. But prostitution is based on private property and falls with it. Thus, communist society, instead of introducing community of women, in fact abolishes it.

-Communist Manifesto