Foxconn, the electronics manufacturing company that assembles Apple's iPhones, apologized Thursday for the pay dispute that triggered massive employee protests, and violent police pushback, at a factory in central China where anti-virus controls slowed production.  Mounting unrest at the Zhengzhou factory has persisted for at least a month, since thousands of employees staged a walkout in October over what they said were unsafe working conditions linked to the spread of COVID-19. All of this comes as China grapples with a spike in virus infections, seen especially in highly populated cities. Foxconn hired a slate of new employees following the exodus. Accusations that the company unlawfully altered its policies for incoming workers, who say they were hired with the promise of higher pay than they are actually receiving, led to protests at the factory.  Videos shared on social media earlier this week appeared to show one particularly large demonstration involving thousands of people in