[DoodleDawg]

Negligent homicide, or manslaughter, IMO. The cop did not likely plan to take a life, but reacted in a way that held a high probability to do so.

Second degree murder. His actions were deliberate but not premeditated. There was no negligence or accident in this.

[MortMan]

Second degree I can agree with. Depending on jurisdiction, we are arguably saying exactly the same thing, IMO. Legal definitions differ.