An ambulance makes its way through revelers in Cardiff city center in Wales in 2010. New measures in the city have reduced injuries caused by violence. Matt Cardy/Getty Images hide caption

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This house in Pine Bluff, Ark., was the scene of a shootout Saturday evening, as Monroe Isadore, 107, held off police for hours before being killed. He had been approached about moving out, a roommate says. Danny Johnston/AP hide caption

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Police investigate outside the Kronometry shop in the French Riviera town of Cannes after two armed men robbed the luxury watch store on Wednesday. Valery Hache/AFP/Getty Images hide caption

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Los Angeles police officers take a break during a basketball game with residents of the Nickerson Gardens housing project in July 2011. Violent crime at Nickerson Gardens and two nearby housing projects has fallen by almost half since 2010. Thomas Watkins/AP hide caption

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Police tape outside a garage in East Cleveland, Ohio. A woman's body was found inside. Two other victims were also discovered in the neighborhood. Kim Palmer/Reuters /Landov hide caption

itoggle caption Kim Palmer/Reuters /Landov

Mary Sullivan, seen here in a photo displayed at a 2000 news conference, was the final victim of the Boston Strangler, officials said Thursday. They plan more DNA tests on the evidence. William Plowman/AP hide caption

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James "Whitey" Bulger, in an image released by the U.S. Marshal's Service in August 2011. EPA /Landov hide caption

itoggle caption EPA /Landov