Brazil and the US lead the world in coronavirus fatalities, with Blacks in both countries dying disproportionately, said Jaime Amparo Alves, an author and social anthropologist at the University of California at Santa Barbara who is raising funds through UneAfro Brazil to aid poverty favela-dwellers. “How can we have social distancing in a space that’s overcrowded and lacks everything?” said Amparo Alves, author of “The Anti-Black City: Police Terror and Black Urban Life in Brazil.”