You make it sound like a bug and not the design of the police. Police are trained from day one to treat every encounter like a potential life and death struggle. Where any arrest they make, stop they conduct, or even passing by a person on the street can turn into their deaths if they are not ready to kill. On the show Patriot Act with Hassan Minhaj, wish somebody would renew it because it was a great show, he touched upon this on an episode about police. He spoke with an ex cop and then Law Professor at the University of North Carolina and he said that police are trained to act and not react. That at even the slightest hint of potential danger you have to be ready to kill or be killed. Police are trained to shoot and ask questions later and it doesn't matter how many innocent people or even people who aren't deserving of death die because of how police are trained.