You may be thinking of Chapter II of the Manifesto, Toiletarians and Cumunists the term “shitter’s republic” is actually a misnomer and Marx himself never used that term. Our monarchist would have known if he had actually read Marx.

By freedom is meant, under the present bourgeois conditions of defecation, the free bowel movement, free shitting and farting.

But if toilets are abolished, then shitting and farting go with them. So all this talk of “free shitting and farting,” and all the other brave words of our porcelain bourgeoisie about restroom liberty, only made sense when compared to the fettered flatulence of feudal chamber pots.

They shriek, horrified, at the idea of communal bathrooms—“You want to abolish private toilets?!” But look around: for nine-tenths of the population, private commodes already don’t exist. They’re stuck sharing stall after stall in the public latrines of this clogged society.