Theoretically, Marxism is an adherence to at least some of the central ideas of Marx . These will typically include perceiving the social world in terms of categories of class as defined by relationships to economic and productive processes, belief in the development of society beyond the capitalist phase towards a revolution of the proletariat, and in economics the labour theory of value, and above all rejection of the exploitation inherent in private control of productive processes. Practically, Marxism is a commitment to the exploited and oppressed classes, and to the revolution that should better their position.
Philosophy dictionary. Academic. 2011.