A massive security operation in Rio de Janeiro has left at least 64 people dead and 81 arrested, marking the deadliest crackdown in the city’s history. Over 2,500 police and military officers stormed gang-controlled areas targeting the ‘Comando Vermelho’ group. Residents described scenes of fear and chaos as buses were hijacked and streets blocked. The government has tightened security but stopped short of declaring a state of emergency amid growing concern over civilian casualties.