> nobody in China cares about what you speak with each other privately, and people talk about stupid policies all the time. The government cares about _public_ actions.

https://news.ycombinator.com/item?id=47252833

My comment and the linked video says otherwise. The guy was in a private group chat and said some nasty things about the police for confiscating his motorcycle. Now he's arrested and in the Tiger Chair.

How are we explaining this?

Group with 75 people. That's a crowd, doesn't matter if gated behind QR code invites. Shit talk cops and gov with the bois is fine. Shit talk / soapbox in a crowd (virtual or real) and get caught or reported = drink tea on the menu.