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In this Aug. 18, 2011 photo, prison guards ride horses that were broken by inmates as they return from farm work detail at the Louisiana State Penitentiary in Angola, La. Some prisoners spend eight hours a day training horses to work in some of the most chaotic situations police officers face: everything from controlling huge crowds to helping break up riots. They also use the animals for work at the prison farm, cultivating fields, helping to control weeds, hauling wagons and equipment. They also sell them, with their second annual horse sale scheduled for October. (AP Photo/Gerald Herbert)