Protests against China’s pervasive anti-Covid curbs, which have confined millions of people to their homes, spread to Shanghai and other cities after complaints that they may have increased the death toll in a northwest apartment fire. Read more Reports said Shanghai police used pepper spray on about 300 protesters. They had gathered Saturday night to mourn the deaths of at least ten people in an apartment fire last week in Urumqi, in the northwest region of Xinjiang. Videos posted on social media claiming to be from Nanjing in the east, Guangzhou in the south, and at least five other cities…