Easy enough to find out. The facts have long been known. Breona once had a boyfriend who was suspected of drug trafficking. The relationship was long over and Breona had no ongoing contact with him, and was frightened of him. The police thought just maybe the ex boyfriend might use her address for sending drugs. That was sufficient justification for them to burst into her apartment unannounced. Breona and her boyfriend assumed the sudden attack was by the ex boyfriend, and Breona was an unarmed black woman so shooting her was the next logical step for the police to take.