Marisela Escobedo Ortiz

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Human rights activists hang a sign on the wall of the state prosecutors office to protest the killing of Marisela Escobedo Ortiz in Ciudad Juarez, Mexico, Friday Dec. 17, 2010. Ms. Escobedo Ortiz, who had been protesting for three days in front of the governor's office in Chihuahua city to demand justice for her slain daughter, was shot in the head Thursday by unknown assailants in front of the governor's office. (AP Photo/Raymundo Ruiz)