By Simon Romero, New York Times, May 24/25, 2013

RIO DE JANEIRO — The attacks have stunned this city. In one, an assailant held a gun to the head of a 30-year-old woman while raping her in front of passengers on a bus as the driver proceeded down a main avenue. In another, a 14-year-old girl from a hillside slum was raped on one of Rio’s most famous stretches of beach.

In yet another case, men abducted and raped a working-class woman in a transit van as it wended through densely populated areas. The police failed to investigate, and a week later the same men raped a 21-year-old American student in the same van, pummeling her face and beating her male companion with a metal bar. [.....]...