Marx wasn't an economist

Marx was a 'political economist' by profession, who also mired himself in the German philosophy of his time. Sociologists also claim him as one of their own, even though he never identified as one. Sociology was still a nascent field at the time, accepted only as a branch of philosophy and yet to have been accepted as a science. For example, sociology was still regarded as part of philosophy at what is now the University of Tokyo in 1920. Furthermore, the USSR (as well as Albania and China) banned sociology for decades as a bourgeois science.

Marx wasn't an economist

Marx was a 'political economist' by profession, who also mired himself in the German philosophy of his time. Sociologists also claim him as one of their own, even though he never identified as one. Sociology was still a nascent field at the time, accepted only as a field of philosophy and yet to have been accepted as a science. Furthermore, the USSR (as well as Albania and China) banned sociology for decades as a bourgeois science.