https://thenextweb.com/socialmedia/2019/09/03/how-hong-kong-protesters-are-embracing-offline-messaging-apps-to-avoid-being-snooped-on/

The internet may be vulnerable to state intervention, but demonstrators in Hong Kong have found a way around it to stay connected to each other.

As pro-democracy rallies rage in the territory, protestors are increasingly giving up on SMS, emails and China’s social media Swiss army knife WeChat in favor of peer-to-peer mesh networking apps like Bridgefy and FireChat.