"Alliance" is a form of social organization used by Marx to replace the state in a communist society. Marx called this society "union" twice. Once in "Holy Family", it was "a kind of unity and class division, and there would be no political power of that kind of proper expression"; Another time was in the * * * Declaration, which is a famous saying: "Instead of the old bourgeois society with class and class opposition, there will be such a consortium, in which everyone's free development is the condition for everyone's free development." So, what role will public power play in a communist society? Marx did not make it clear. In the French Civil War, Marx said: "What social functions will be retained in a communist society, that is, what functions will be retained by the state now? Only science can answer."