I got a question for you....why can't you say something good or nice about communism?
Why would I have anything good to say about a system of government that piled up a hundred million corpses over the course of the twentieth century, and consistently produced poverty, oppression, and refugees?
The closest thing to a compliment that I can give it is that Nazism is arguably
worse. And I say arguably because Nazism is so openly, obviously, and nakedly evil, and is racially exclusive, and this severely limits its appeal to people -- this keeps it from becoming widespread. Communism, on the other hand, is a real-world embodiment of Shakespeare's observation that "...the devil hath power to assume a pleasing shape." Communism, with it's "from each according to his ability, to each according to his need" principle sounds
so much more noble on the surface (it's not; voting to rob Peter to pay Paul is not actually moral, no matter how many people vote to do it), so unlike Nazism, it does
have wide appeal, and so this pernicious ideology can suck many, many more people in and make them true believers, and thus the ideology can end up killing a lot more people. This is why Nazi Germany only managed to exterminate barely more than a tenth
as many people as the assorted communist regimes did over the last century.