Dear Milhouse,
If someone attacks me for no reason, and the only way I could save myself is with fatal force, I would term that murder.The correct term is killing. Here is why I use them interchangeably.
The term applies to animals, so I term it murder based on the act. But from a purely legal perspective, you appear to be correct. Murder has to be premeditated. That is only relevant when the Judge and Jury are deliberating in Court. The question to bring charges is a moral not a legal one. Morally, every intentional killing has to be considered as a possible murder. To do otherwise is to cheapen the value of life. [I know this is not abortion or end of life, so who cares if one person dies or lives.]
How many times have you been with someone who overdosed on fentanyl? You sound very sure of it. Maybe you are an EMT and specialize in Narcan delivery.
Nice list you put together. Maybe a percent of a percent of all police killings this decade.