While the coronavirus pandemic has led authorities around the globe to cancel concerts and sporting events, and even shut down daily activities in some places, Mexico City is going ahead with Vive Latino — one of the most important music festivals in the country. Some acts backed out, but tens of thousands of music fans flocked on Saturday to the first day of the festival, which still expected Guns N' Roses, Carlos Vives and Zoe to be among its headliners.