Where is your proof that the police killed 9 people?
It's right next to the proof that the bikers killed each other in an exchange of gunfire while at least 12 shots fired by police sharpshooters all (coincidentally) went wild and hit no one at all.
And I don't believe the police only fired 12 shots. Sharpshooters know to police their brass and it's surprising that 12 casings belonging to the police were found at all. Someone wasn't being careful about picking up evidence.