To understand the issue (and any issue for that matter) I think it's important to make an effort to try to see things from perspectives outside your own frame of reference. There are 1.4 billion Chinese, the vast majority of whom see what we frame as democratic protests, as unlawful acts of arbitrary destruction and now increasingly often - violence as well. And they too are framing the violence as increasingly racial/cultural. For instance mainlanders tend to speak Mandarin. Hong Kongers tend to speak Cantonese. Guess whose property is getting disproportionately destroyed. And as these protests are turning increasingly violent, it's easy to see where that is and will continue to be focused as well.
Even within Hong Kong there seems to be no reliable information available on aggregate views. The only poll I can find, potentially of dubious reliability, is from 2016. [1] And in that poll, the vast majority of those living within Hong Kong were against separating from China once the 'one country, two systems' agreement expires, in 2047. Only 17.4% supported independence from China even when it was just in theory and 2 decades away. What percent of the protesters are within that 17.4%, and what are the views of the 82.6% on these protests? These seem like important questions that are going unasked, let alone answered by our media and reporting. Whatever the exact numbers may be, there are a lot of people who are very much against whatever you want to call what is happening in Hong Kong. This isn't just a scenario of "good guys" vs "authoritarian government." Its large groups of people who feel very different about the same situation.
Of course you will reference propaganda and I fully agree with you. But there too I am left to wonder something. Take the average Chinese who relies on his regular sources of information for news. And now take the average American who similarly relies on his regular sources of news for information. Who would be able to provide a more accurate response to factual queries on the protests, Hong Kong's relationship with China, and the views/values/etc of those within and without the protest group? Similarly, do you think that, for instance, the New York Times has provided accurate and objective reporting on this topic? Or do you think that their reporting and presentation is attempting to present this story from a distinctly prejudiced angle?
Something that I think social media has masked for many people today is that our own views are not "THE" moral imperative for the world. In fact they, regardless of what they are, tend to be quite obscure when contrasted against the world at large. Step outside the anglosphere and it's amazing how insane we are starting to look from the outside. Or perhaps we always looked this way, but by living inside the bubble for so many years I was equally a part of the insanity.
[1] - https://www.reuters.com/article/us-hongkong-china-survey-idU...