A couple of days before the\u00a0Covid-19\u00a0lockdown was announced last March, Imcha Imchen, a Naga singer-songwriter based in Mumbai, was heading home after a day at the studio. \u201cCorona, Corona\u201d shouted a group of boys from a distance. Imchen, 23 and accustomed to what he calls the \u201cstupidity\u201d of people \u201cwho live in big cities\u201d, ignored them, his head held high. The next morning, however, the jeers began again \u2014 this time from a group of kids on the road to work. It did not take Imchen long to book a one-way flight to Bengaluru, where his family lived.