Classes were cancelled at the Universidade Federal da Bahia for a couple of days a few weeks ago because two neighbouring favelas, Calabar and Alto das Pombas, were both at war, leaving at least ten people dead. Both areas were occupied by Military Police (PM). Dozens of families fled. One of my students apologised for missing our online class: he had been trapped at home listening to gunfire and helicopters for two full days; unable to read or concentrate, he had fled the city.