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Dallas Police respond after shots were fired at a Black Lives Matter rally in downtown Dallas (Smiley N. Pool/The Dallas Morning News via AP)
Police officers draw their guns (LM Otero/AP)
Dallas residents stand near the scene where Dallas police officers were shot and killed on July 7, 2016 (Getty Images)
A shot-out window (LM Otero/AP)
An unknown patient being taken away (Tony Gutierrez/AP)
Dallas Police Chief David Brown leaving Baylor University Hospital (Tony Gutierrez/AP)