As governments debate ways to slow the spread of coronavirus, India has launched one of the most draconian social experiments in human history, locking down its entire population — including hundreds of millions of people who struggle to survive on a few dollars a day. They are balloon sellers, maids, watchmen and street peddlers. For them, hunger is the enemy, maybe even more than COVID-19. The prime minister pleads for Indians to “take care of as many poor people as you can.”