You're of course entitled to your opinion on the HK protests, but I don't think that's what people are looking for. You're just one random person on the internet. What I think we're interested in is figuring out what public sentiment
actually is, and what's causing it.
For example, is it that most Chinese people are genuinely, organically outraged? Or is it a small, vocal minority that is being amplified by state media? Or is it mainly groups like the 50 Cent Army manipulating public opinion? It's hard to say, and I don't think the Western media is equipped to answer that question.
As an example, there are reports that Chinese media outlets are dishonestly painting the HK protestors as largely a violent group that (among other things) are separatists. If people in China hear that, and believe that, I'd say outrage is completely understandable... but it's based on a false premise. But I don't -- and can't -- know what's actually happening over there, so it's just one explanation among many possibilities. How do we, as foreigners, get to the heart of the matter? Is it even possible?
To your note about the language barrier: I think about that a lot. I speak/understand a very tiny amount of Chinese, and can read basically none (something I'd like to improve at soon). I was watching a recording of a clip of a Chinese news broadcast, and of course there was a translator speaking over it in English. How do I know the English translation was actually what was said? Even if the translators were acting in good faith, how do I know that the translation accurately expresses the intent of the speaker? I don't, and recognize that there are limits to how much I can understand what's going on.
I think, also, for context, a lot of non-Chinese people naturally distrust China's government. Personally, I have trouble believing anything at face value that comes out of an authoritarian government, or the media apparatus that it controls. The US has many, many faults, but at least I can believe with reasonable certainty that the media outlets are saying things (whether right or wrong) because they want to say them, not because the government is forcing them to say things.