by Thomas URBAIN DALLAS, United States (AFP) — As America reeled from a week of violence pitting police officers against civilians, Dallas Police Chief David Brown came to personify the nation’s trauma. After a black army veteran killed five white officers at a peaceful march in the Texas city, the 55-year-old police chief, who is African-American, delivered a simple but poignant message: “We are heartbroken,” he said. “This must stop. This divisiveness between our police […]