As I mentioned above, the Chinese are undoubtedly extremely sensitive about HK (I would argue due to propaganda but that’s irrelevant to the question). There is some amount of authenticity this (definitely at least 50%) and the HK protests are truly almost universally very unpopular in the mainland. That said, the degree to which this particular outrage is manufactured by Beijing vs organic is extremely difficult to determine.

for the nba case, i'm pretty sure its organic.. moreover, its chinese netizen pushes the gov to take action. the very first discussion happens probably on diba (sth like 4chan). then the screenshot of the tweet spread virally with outrage of netizens. after that the gov notices it and takes action