BERIANE, Algeria (Reuters) - Hundreds of Algerian security forces were deployed in the town of Beriane on Sunday to try to end three nights of clashes between Arabs and minority Berbers, the worst urban unrest in the OPEC producer in months. Residents said two people, including a 67-year-old, man have been killed and dozens made homeless since the disturbances involving rival gangs of hooded young men broke out in this north Saharan town of about 35,000 on Thursday evening. "They burn our houses, steal and kill. The hatred has made them blind," Slimane Baaziz, 51, a member of the Mozabite...