Online footage showed workers protesting at a facility belonging to Zybio Inc, a Chinese pharmaceutical company, in the mega city of Chongqing in the country’s southwest. Social media users said the workers, who produced rapid antigen test kits, had either been unpaid or not paid the full amount promised by Zybio. Videos of the protests at the facility in Chongqing’s Dadukou district were censored on Chinese social media on Monday. One clip posted on Twitter on Sunday appeared to show a standoff between police and workers, who were seen shouting: “Give back my money!” In another, angry workers were seen throwing objects at police. A third video showed laborers protesting from the factory floor, hurling boxes — containing what online social media posts say were antigen test kits — to express their anger.

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