by Mauro PIMENTEL RIO DE JANEIRO, Brazil (AFP) — A massive police operation against drug traffickers in a Brazilian favela Thursday left 25 people dead, turning the impoverished Rio de Janeiro neighborhood into a battlefield and drawing condemnation from rights groups. A policeman was among those killed in the early morning raid on Jacarezinho, on Rio’s north side, where residents awoke to explosions, heavy gunfire and helicopters overhead. Police confirmed the toll — and investigators […]