That's a very good point. Libs say, 'How can you be a communist, don't you know how bad it was when people tried it?'

(Ignoring the fact that it has always been good, actually, on balance.) The answer is, 'Unlike capitalists, we have no reason to do what failed before.'

Hence why China, Cuba, Vietnam, Laos, DPRK have their own problems—but almost none of which are the same as those that happened in the USSR.

It's only liberals who say, 'This is capitalism, tough shit if you don't like it, things will get better in however many years. And yes, we plan to do all the stuff that's always been horrific, thank you. No, I don't understand contradiction, why do you ask?'

As that's built into the bourgeois outlook, they simply cannot comprehend how differently communists think.