Roland Harris has watched his son die a hundred times. The final moments of his life, documented in thermal video captured by a police aircraft, are burned into Harris’s mind: His teenage son, Jacob, steps out of a car. He runs from the police. Two seconds later, officers open fire. Bullets pierce his heart, lungs, and intestines. He falls to the ground, bleeding. Police pepper him with rubber bullets, hitting him in the face and backside. He is dying in the dirt. Then officers sic a dog on him.