You do have to be careful about people from other cultures, and historical beliefs. I'm not saying ours are wrong, but they might be a little more black and white negative than is completely accurate, or at least than would make any sense to someone who actually lived in that country. That's not to say that Chinese communism isn't/wasn't horrible and brutal, but to us -- it's something we read facts about in a history book or the newspaper, and those facts add up to horrible and brutal. To them, it's something they or their parents lived through, and all their experience of it wasn't horrible and brutal (unless they were the particular victims of it.) So it's understandable that their perspective would be a bit different, and not completely wrong for that (though wrong to the extent that they deny the reality of the evil.)

I find it fascinating, for example, that my Chinese sister-in-law believes that the Japanese are simply the most evil people in the world. Now, if you look at some of the things their empire has done historically, especially to China, you understand why a Chinese person would think that. But for most of our lifetimes, Japan has gone from uneasy ally to downright buddy-buddy business partner and subject of cultural fascination, not to mention the ever-friendly tourists one sees at every significant public site in America (though I did note their conspicuous absence at the WWII Memorial in DC, which was noticeable given how they were swarming all over the rest of the mall. ) So to us, it's shocking that someone could have a horribly low opinion of the Japanese, because we think they're mostly nice people -- but OTOH, most of us have no qualms about visibly shuddering whenever someone mentions Communist China, even if we'd be quick to add that we've nothing personally against Chinese people.