Stalin, and many many others, is just another scumbag on the list.
People are generally quite nice wherever they are from. Thus, when the likes of you and I go around the world, we get on fine with most folks.
The problems come when folks go around the world (whether in their small community, larger nation state or globally) with the intention of empowering themselves. Due to the insanity of human society/nature, this seems to be a consistent theme in our shared history. These folks might be Stalin or the British Empire or the Fourth Reich or American Federalists or Wahabi expansionalists or Zionists... I see our plight as one that is constantly trying to fight against these corrupt self-serving fukers.