As the Chinese coronavirus shuts down our economy and locks in our homes, we are discovering stock boys matter and Hollywood celebrities do not. Out there in the shit, out there in the danger, out there touching countless surfaces that could be infected, out there working punishing hours for low wages are the people we too often overlook and take for granted — even though they are the ones who keep our world turning. Away from their families, risking illness, America’s farm workers, truck drivers, grocery store workers, sanitation workers, and delivery people, are holding together the slender thread that...