Videos of hundreds protesting in Shanghai started to appear on WeChat Saturday night. Showing chants about removing COVID-19 restrictions and demanding freedom, they would only stay up for only minutes before being censored. Elliot Wang, a 26-year-old in Beijing, was amazed. "I started refreshing constantly, and saving videos, and taking screenshots of what I could before it got censored," said Wang, who only agreed to be quoted using his English name, in fear of government retaliation. "A lot of my friends were sharing the videos of the protests in Shanghai. I shared them too, but they would get taken down...