Totalitarian systems suck. Assholes suck. Dictators suck. Anyone who claims that their political side is without major sin is showing blindness. Yes, there have been plenty of shitty socialists/communists, but capitalists have killed their millions too.
I don’t think the article that spawned this is particularly constructive, but I also don’t think presenting a conveniently filtered list of bad communists is constructive to nuanced conversation either.