Ed Asner, flaming Leftist commie and virulent anti-gunner (though he admitted to carrying one because he needs one), has stated that he would love to perform the starring role on a film about Stalin.
I think this particular breed is so far to the left that they don’t even care any more. If they can make Mao a hero, Stalin is nothing. I wouldn’t be surprised if someone like Asner or Danny Glover or Belafonte would come out and praise the purges and mass starvations at this point. There actually was some “esteemed” college professor and historian who did so a few years back, but I don’t remember the name.