As a blackout plunged her desert dwelling into darkness, Suwa Devi, a dancer belonging to India’s Kalbeliya gypsy community, asked her neighbour to turn on his jeep’s headlights so she could continue teaching her Zoom class, outside.The coronavirus pandemic has forced many people to go online, but the largely nomadic, marginalised Kalbeliya face bigger challenges than most, with several living in mud huts or tents with patchy electricity and non-existent Wi-fi.“In the beginning, I had no idea…