For more than two decades, the only Hong Kong I'd known was one where free expression and dissent were legally protected and a vibrant tradition. @jwf825 and I documented what's changed and disappeared when a place loses these rights. https://www.nytimes.com/interactive/2020/09/04/world/asia/hong-kong-speech.html

How publishers have hastily rewritten their Liberal Studies textbooks is well documented by Hong Kong's media. Here's an example we found: a reference to the suspected "collusion between the government, big businesses, rural powers & triads" (underlined in red) was scrubbed

And of course, Hong Kong served as a haven for political refugees including Tiananmen Square student leaders. Now, an entire section about the movement and the June 4 massacre got removed. The names Zhou Yongkang & Bo Xilai were also taken out from this section about corruption.