Value-form
The Western Left academics are nowadays very happy to talk about "varieties of capitalism", but talking about "varieties of socialism" remains almost an absolute "no-no". Most Marxists continue to believe in "only one" (Marxian) socialism: either that, or nothing at all. "Either" a society or movement conforms to the true concept of socialism, "or" it does not; and if it does not, it "cannot be" socialism. However, precisely "because" there are many different Marxist beliefs about socialism, Marxists cannot agree among themselves whether Soviet-type societies were socialist, capitalist, or something else. Some countries meet with the moral expectations which Marxists have, and others do not.Originally Marx and Engels themselves had heckled the advocates of "true socialism", but later Friedrich Engels and Karl Kautsky promoted Marxist socialism as the one and true "scientific socialism" within the Socialist International. When he was 43 years old, Lenin stated: "The Marxist doctrine is omnipotent because it is true". Lenin's Communist International (a deliberate split with the social democrats) adopted Marxist socialism as its official political doctrine.
Marxist schools of thought
Autonomism is a category of Marxist social movements around the world that emphasize the ability to organize in autonomous and horizontal networks, as opposed to hierarchical structures such as unions or parties. Autonomist Marxists, including Harry Cleaver, broaden the definition of the working-class to include salaried and unpaid labour, such as skilled professions and housework—it focuses on the working class in advanced capitalist states as the primary force of change in the construct of capital. Modern autonomist theorists such as Antonio Negri and Michael Hardt argue that network power constructs are the most effective methods of organization against the neoliberal regime of accumulation and predict a massive shift in the dynamics of capital into a 21st century empire.