I would kindly ask you not to paint us all with the same brush!
Marxists can defend the necessity the dictatorship of the proletariat, but this is only a use of force for holding down the old oppressing classes as we destroy property and wage labor.
Any marxist worth the name can find no justification for recreating what Marx called the "the whole sham of state-mysteries and state pretensions." As Bordiga said, "we don't want to free the State, we want to put it in chains, and then strangle it"!
Infinitely less is there any justification for the Stalinist states that just defended a new kind of capital accumulation.