RIO DE JANEIRO (AP) — A Brazilian police operation in Rio de Janeiro favelas on Wednesday killed seven presumed drug traffickers, including a gang chief, as well as a local resident caught in the crossfire, law enforcement officials said. Claúdio Augusto dos Santos, a drug-trafficking boss and member of the notorious Red Command criminal organization, was among those killed in the operation in central Rio, Secretary of the Military Police Col. Marcelo de Menezes said in a press conference. In