A Hong Kong Dragon Airlines Ltd. employee wearing a protective mask uses a mobile phone while traveling in an Airport Express train to the Hong Kong International Airport in Hong Kong, China. (Photographer: Ivan Abreu/Bloomberg)
(Bloomberg Businessweek) -- It’s clear by now that face masks save lives by hindering the spread of Covid-19. But some people continue to argue that mask mandates are intrusive and unnecessary because most people can be counted on to do the right thing for their own and their families’ safety.