edit: Why downvotes? I've asked a question, I wonder how western people see Stalin in history. I as Russian see him as the one who was involved in defeating Nazis
...or Maoism "struggle sessions" which resulted in 2 million deaths [1]
...or just read about mass killings in communist regimes[2]. Clearly communist governments have mass killed a lot of people.
[0] https://en.wikipedia.org/wiki/Red_Terror
[1] https://en.wikipedia.org/wiki/Struggle_session
[2] https://en.wikipedia.org/wiki/Mass_killings_under_Communist_...
The general consensus is that Germany under Hitler killed around 11 million noncombatants. The USSR under Stalin killed at least 20 million, with some estimates ranging much higher.
Many people in the west still say that Hitler was worse because he tried to exterminate entire ethnic groups, where Stalin mostly killed anyone that he thought might get in his way. I think they were both monsters, and there's no profit in trying to measure which one was worse.
Stalin did help defeat the Nazis. Don't make the mistake of thinking that makes him the good guy. In stories, the villain's enemy is always a hero, but in real life, villains fight other villains all the time.
Only when counting famines and a civil war type situation among his casualties. He killed much less than Hitler otherwise (which would still be a lot).