Pedestrians observe the window of an office building riddled with bullet holes after gangsters shot at it in one of many overnight attacks, as police try to halt the worst wave of crime-related violence in memory, in Sao Paulo, Brazil May 15, 2006. (Xinhua/Reuters Photo)

Policemen frisk suspects looking for weapons in the north area of Sao Paulo. Gangs hijacked buses and attacked Sao Paulo banks, killing at least 23 more people, media reports said, on the third day of an organised assault which has left (Xinhua Photo)

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