It's not a "belief", it's fact. Mao killed 45 million people.
Our founding fathers would probably be considered terrorists to the Crown.
Edit: to elaborate, if you asked them who was more evil, you'd get different answers. Trevor Noah has a great section on this in his book about an upbringing in South Africa:
> “The name Hitler does not offend a black South African because Hitler is not the worst thing a black South African can imagine. Every country thinks their history is the most important, and that’s especially true in the West. But if black South Africans could go back in time and kill one person, Cecil Rhodes would come up before Hitler. If people in the Congo could go back in time and kill one person, Belgium’s King Leopold would come way before Hitler. If Native Americans could go back in time and kill one person, it would probably be Christopher Columbus or Andrew Jackson. ”
If we are going to judge a country by its history, then no country is “good.”
Most readers who have the knowledge about China instantly know the author is misleading audience by put up half truth and remove important relevant context. But those readers might not dare to speak out because it would be heavily down voted because truth doesn't match the popular belief that Chinese government is an evil authoritarian regime. It's sad that quite large portion of population still can not differentiate facts and their own belief. HNer's are already much better than other online communities.