This is one argument that many anarchists make; the truth is that (at the very least) an order of magnitude more people were killed by their own governments in the 20th century than were killed by their fellow citizens. Hobbes was wrong.
Is it accurate to imply that the Soviets and Chinese had any sense of ownership of their governments? Especially with the forced starvation of Ukraine, it was practically a foreign occupation (this is muddy, Kyiv is a historic center of Russia).
I don't think it's a refutation of Hobbes that a dictator could seize control of a state and perpetrate mass murder.
Hobbes made the case that a totalitarian dictator was the least likely to perpetrate mass murder; according to his ideas, the democracies would be more violent.
