Post-Marxism trend in philosophy and social theory based on Karl Marx's writings and Marxism proper, and bypassing orthodox Marxism. Philosophically, post-Marxism counters derivationism and essentialism (for example, it does not see the State as an instrument that ‘functions’ unambiguously and autonomously on behalf of the interests of a given class). Recent overviews of post-Marxism are provided by Ernesto Screpanti, Göran Therborn, and Gregory Meyerson.