The fact that a lot of media opinion pieces in North America and Europe may be critical of the CCP does not mean that the local populations are brainwashed. Pro-CCP opinions can be easily accessed. There's no need to use a VPN or dodge some sort of state-imposed block. There's also no state-based punishment for agreeing with the CCP. Also, historically on issues like Taiwan there were actually a lot of pro-CCP opinions even in the mainstream media, largely because at the time the view was "better not annoy China, just pretend it's not an issue, don't sell arms because it's the wrong time", etc.
Bringing the discussion to the topic at hand (Hong Kong), it's important to remember that disagreeing with young Hong Kongese/the protesters doesn't mean they're incapable of rational thought. They have easy access to a much wider body of media than people in mainland China do. There are lots of pro-government TV stations, radio channels and newspapers in HK. Also, ironically, this upsurge in political awareness is partly down to the HK government pushing critical thinking classes years ago because they were worried about rote-based learning.
Brain wash through the media maybe too strong a word for it. But the whole essence of having a media (all media is state managed/control, including western ones), is too guide and influence public opinions so it is easier to guide the country's policy directions.
On Taiwan, you made it sound like it's China's fault that western MSM is doing it's best because it doesn't want to "annoy China, pretend it's not an issue, and not selling arms at the wrong time"! Gee, there are so much BS here, I don't know where to begin.
First of all, for every country having a diplomatic relationship with China does so freely. And they went in agreeing there's only one China! So therefore apart from a dozen countries, most of the world agrees there's only one China, and in doing so recognised China's sovereignty over Taiwan and as such should respect that country's sovereignty. This is an important point all MSM neglect to mention (by purpose). So It is not pretending is not an issue, it is , in fact complying it is an issue, and that is it is part of China.
And finally, this takes the biscuits. And goes to prove that you've been "brain-washed" into thinking all Chinese lacks critical thinking! I can tell you this is absolutely wrong! Being in education myself, I could easily say my A-levels students are all route learners. This is because they are after a quick fix. To past their exams with the least efforts. But it doesn't mean they lack critical thinking! So all these young thugs (That is who they are) didn't become thugs because they were able to critically analysis their situation and thought democracy is worth fighting for! Hell a route learners would do the same. You are also blinded (not sure if you could read chinese) by the facts that the education system was hijacked by radicals and litually brain wash young minds from 4 years upwards. Also text were changed to include opium war was Because British wanted to save Chinese from opium. And the Japanese were not invaders! Changing of history is not brain washing I don't know what is!

Just how old is these rioters, so they even be out there fighting for "democracy" when they don't even have a right to vote!
Is thus not propaganda? Don't shoot? Where do they think they are? America?
Let's bring your child day, so he can get involved and maybe beat a cop or two? Is this not brain washing?

In case you can't read Chinese, the caption says; still don't have fully grown hair down below! So tell me are they able to vote? Also full critical thinking achieved?
More people of voting age, and full critical thinking achieved.
However, these might be of voting age and reached full critical thinking age! Lol