Stop fighting wind
They won't open their eyes on the very simple fact that previous communist countries were dictatorships... That a dictatorship is communist, capitalist, religious or whatever it doesn't matter. It's a dictatorship.
Now could we implement communism without dictatorship? That would be an interesting question.
But don't argue just put those idiots on ignore. They're too stupid to discuss anything outside of their beliefs.
I never saw a communist refusing to admit capitalism has its pros.
I never saw a capitalist admitting communism has its pros.
It isn't difficult to see where is the open mind.