This Aug. 9, 2012, photo shows the border fence with security camera towers in the distance in Nogales, Mexico. The location is near the site where a U.S. Border Patrol agent being pelted with rocks opened fire toward Mexico, killing a 16-year-old boy. The shooting has prompted renewed outcry over the Border Patrol's use-of-force policies and angered human rights activists and Mexican officials who believe the incident has become part of a disturbing trend along the border _ gunning down rock-throwers rather than using non-lethal weapons. (AP Photo/Ross D. Franklin)
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