Protesters hold up a white piece of paper against censorship during a protest against China’s strict zero COVID measures on November 27, 2022 in Beijing. Kevin Frayer/Getty Images
Kevin Frayer/Getty Images
In late November, as anti-COVID lockdown protests broke out across cities in China and photos and videos were shared over social media, researchers noticed something odd on Twitter. When they searched for the names of large cities in China, the results included scads of suggestive images and posts advertising escort services. Some observers
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