Dallas police officer arrested, charged with two counts of capital murder
A Dallas police cruiser sits along Griffin Street near the parking garage, rear left, where an active investigation scene is ongoing, Friday, July 8, 2016, in Dallas. An Army veteran killed by Dallas police after the sniper slayings of five officers during a protest march told authorities that he was upset about the police shootings of two black men earlier this week and wanted to exterminate whites, "especially white officers," officials said Friday. (AP Photo/Tony Gutierrez)
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