Joaquin "El Chapo" Guzman is escorted to a helicopter in handcuffs by Mexican navy marines at a navy hanger in Mexico City after his capture last year. Mexico's security now say Guzman has escaped from a maximum security prison for the second time. Eduardo Verdugo/AP hide caption

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Eduardo Verdugo/AP

Reproduction of a letter to the National Commission of Human Rights from criminals, drug dealers, murderers and kidnappers in "El Altiplano," Mexico's highest-security prison. Ronaldo Schemidt/AFP/Getty Images hide caption

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Ronaldo Schemidt/AFP/Getty Images

The alleged leader of the Zetas drug cartel, Omar Trevino Morales, is taken under custody to be presented to the press at the Attorney General Office's hangar at the airport in Mexico City, on March 4. Mexican authorities captured Trevino Wednesday, dealing a blow to the feared gang and giving the embattled government a second major arrest in a week. Omar Torres/AFP/Getty Images hide caption

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Omar Torres/AFP/Getty Images

Mexico Takes Out Cartel Heads, But Crime Continues To Climb

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People view Mississippi River floodwaters on Sunday, May 8, 2011, in Memphis, Tenn. Mark Humphrey/AP hide caption

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Mark Humphrey/AP