It's the appearance of an organizing that is really taboo. Of course please take my opinion with a grain of salt. I am a foreigner who was there less than a year.
advchina/serpentza/laowhy86 are the canaries in the coalmine atm.
China has no freedom of speech, the press, religion, or assembly.
Also, is there a firewall that prevents you from accessing portions of the internet your government doesn't want you to see?
(I've never been to China but this is what seems to be reported.)
Sure:
How about a look at Reporters without borders, which ranks press freedom:
US #48 (behind Botswana, Child and Romania)
China #177 (of 180, so only ahead of Eritrea, NK and Turkmenistan)
Or this HRW report will be an interestjng read: https://www.hrw.org/world-report/2019/country-chapters/unite...
We have to remember there are two justice systems in this country and re-introducing slavery through the prison industrial complex was something we deliberately did without good reason.... not in response to dangerous extremism like in China.
Here's a major presidential candidate on the topic:
This is a fundamental difference (and yes, America has detained people indefinitely without trial, but I would condemn that _too_, and they are a small minority of prisoners).
Furthermore, there are ~2.3 million _people_ in prison, of which 40% are black (39% white, 19% Hispanic).