In the southwestern Chinese city of Chongqing, hundreds of workers locked in a pay dispute with a Covid test kit manufacturer hurled objects at police officers in riot gear, who held up shields as they retreated.In the eastern city of Hangzhou, witnesses said several workers climbed on the roof of a test kit factory and threatened to jump to protest unpaid furloughs.The Times also examined videos that have circulated on social media of protests in Hangzhou as well as Chongqing, where workers confronted the police in large numbers.Workers have next to no recourse to resolve their grievances other than to lash out, said Li Qiang, founder and executive director of China Labor Watch, a New York-based Chinese labor rights group.“It demonstrates that if a company ignores workers rights, especially the most vulnerable temporary workers, it will face serious consequences.” In Chongqing, protesters at a test kit manufacturer chanted “Pay me back” as they faced off with lines of police on Jan. 7."