Not shitposting, but why does every state or country that has socialism or communism (Soviet Russia, Nazi Germany...

North Korea did it right

"National socialism" that killed all the socialists, anarchists, communists, trade unionists and also all the asserists, then proceeded to create a race-based class system with systematic genocide?
The very same system for which the word "privatisation" was invented? The same system that promoted class collaboration and worked together with the rich?

Its because communism and socialism is against human nature

No it isn't:
en.wikipedia.org/wiki/Economy_of_Nazi_Germany#Hitler.27s_views_on_economics


en.wikipedia.org/wiki/Night_of_the_Long_Knives

Seriously though how do we respond to the classic "it only works on paper xD" and "it would be great if humans weren't in charge but all it takes is a single greedy person to fuck everything up"?

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Point out that the exact same reasoning can be applied to the capitalist ideology they apologize for and that the logical conclusion of their argument is to revert to slave society.

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it's state socialism silly user

No.