To me, one of the problems of Marxism is that it eventually confused the mechanism (state control of production) with the goal of human liberation and put the first above the second. The attempt to distinguish left/right based on economic system is, I find, not helpful. Is China left or right? Does the US DOD, one of the largest economic planning organizations in the history of the world fit into capitalism or socialism? But one point I was attempting to make here is that the forms of authoritarian/right propaganda are not good vehicles for supposedly left-wing critique as they carry a message that cannot be separated from the form.