We've had enough officer involved shooting in San Diego to identify how things are done. A single police officer who shoots an unarmed citizen generally finds himself in trouble. Questions are asked whether he used excessive force. Even after he is inevitably absolved by the District Attorney the officer faces civil suits.
That never happens when there are mass shootings. When a dozen police officers, or more, unload their weapons into a helpless victim their collective judgement is never called into question. This has led to an unwritten police policy, whenever one policeman discharges his weapon, every officer within range automatically fires all their bullets into the target.
While the Cleveland shooting may be an extreme example it is also an appropriate example, 47 bullets riddle two corpses, cops missed on 90 other shots. There will be some noise, perhaps some slight discipline, but in the end little will happen. When dozens of cops fire their weapons no individual is at fault. And police, yet again, get away with felonious manslaughter.