u/darthpoof - originally from r/GenZhou
“When, at last, it becomes the real representative of the whole of society, it renders itself unnecessary. As soon as there is no longer any social class to be held in subjection; as soon as class rule, and the individual struggle for existence based upon our present anarchy in production, with the collisions and excesses arising from these, are removed, nothing more remains to be repressed, and a special repressive force, a State, is no longer necessary. The first act by virtue of which the State really constitutes itself the representative of the whole of society — the taking possession of the means of production in the name of society — this is, at the same time, its last independent act as a State. State interference in social relations becomes, in one domain after another, superfluous, and then dies out of itself; the government of persons is replaced by the administration of things, and by the conduct of processes of production. The State is not “abolished”. It dies out. This gives the measure of the value of the phrase: “a free State”, both as to its justifiable use at times by agitators, and as to its ultimate scientific insufficiency; and also of the demands of the so-called anarchists for the abolition of the State out of hand.”

The State is the apparatus one class uses to supress other classes; it arose from class society and likewise disappears along with class society. When there is no class society on a global scale, there is by definition no state. There is still a government and representatives etc etc, not some weird utopian/anarchist concept of “the people” directly ruling and deciding everything with some sort of impossible mass direct democracy.