I have been trying to get this very point across to people for years!!!
All one has to do is read Mein Kampf to understand that Nazism was an extreme brand of socialism. Arguments to the contrary are BS and liberal/democrat wishful thinking.
I’ve now come across Leftist who are trying the same lie with other failed Socialist states like the USSR.
Beyond the tired old ‘North Korea’ talking point they have virtually nothing to bolster this assertion.
At which point they will degenerate into childish invective or lines like ‘I don’t have time to do your research for you’.