I'm almost certain Stalin was a communist dictator. Not socialist. As found on Wikipedia, it is indeed called Stalinism.

Hello there! If you found my profile (likely after I posted a pedantic correction) then I hope you are having a fantastic day! If not, then I still hope you have a good time!
And if you are one of a few people (they know who they are, likely not you) then I sincerely wish you a bad time.