Social scientist: Since the body of thought known as Marxism claims to describe rigorously an inexorable historical movement toward the socialization of the means of production, it should be regarded as a scientific theory.
Premise
The body of thought known M → DHM as Marxism claims to describe rigorously an inexorable historical movement toward the socialization of the means of production.
Intermediate Conclusion
[Marxism] should be M → ST regarded as a scientific theory.
Main Conclusion
Thus, certain interpreters, M → ~PP in taking Marxism as a political program aimed at radically transforming society, have misconstrued it.
Evaluate
The argument assumes ST → ~PP that scientific theories are not political programs.