“They should have killed him. He will continue to present a danger. Having killed three officers it would be easy for him to dehumanize more people and rationalize their murder. He’s had a clean break with reality and is playing the part of a Rambo.”
Or, he made a rational decision that unless police officers start wondering whether they were going to make it home after their shift, police power will continue to look more and more like that of a fascist or communist state.