Glendale, Calif., Police Sgt. Steve Robertson was first incapacitated by a laser beam while landing a helicopter in the mid-1990s. Since then, he says, he and his fellow police pilots in Glendale have been targeted dozens of times by people shining cheap, easy-to-buy lasers. Mandalit del Barco/NPR hide caption

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Los Angeles police officers point to known local gang suspects after a  federal gang raid operation in Los Angeles on Aug. 25. Damian Dovarganes/AP hide caption

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Los Angeles Police Chief Charlie Beck (middle), Mayor Antonio Villaraigosa (left) and Police Commission President John Mack detail the city's crime figures, the lowest in four decades. Damian Dovarganes/AP hide caption

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Mexican and Peruvian fighters take aim at the American eagle that sits above Siqueiros' crucified peasant in America Tropical. Courtesy of Luis C. Garz hide caption

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Jars full of medical marijuana are seen at Sunset Junction medical marijuana dispensary in Los Angeles in May. As of the end of September, the dispensary was still open. Kevork Djansezian/Getty Images hide caption

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Carlos Gardel circa 1933. Jose Maria Silva/Archivo General de la Nacion hide caption

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Members of the Treme Brass Band walk through the 9th Ward after attending a Memorial Day service honoring the victims of Hurricane Katrina in 2006. Mario Tama/Getty Images hide caption

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