One of the sillier concepts Marx came up with is that history has its own momentum. That idea alone makes Marxism and all its derivatives religions with mankind occupying the role of Godhead. Religions, by the way, that in less than two centuries have murdered many millions more than all the others have over the past twenty.
I’ve seen estimates that Islam has over a quarter billion victims over the centuries. I don’t think the Marxists have accrued quite that number.