DALLAS, July 9, 2016 (Xinhua) -- An FBI detective works at the scene of shooting of police personnel in Dallas, the United States, July 8, 2016. Five police personnel were killed and seven others injured as two snipers opened fire at them during a protest against police shootings of two African-American men in Louisiana and Minnesota, in downtown Dallas Thursday night. (Xinhua/Zhang Yongxing)
