It wouldn’t matter whether it was an accident or justifiable? Any time they know that somebody contributed to the death of another they have to charge that person?
Can't be the case, or the original prosecutor would have charged him. He didn't think the evidence warranted it.
Where you’re getting cobbled up is by assuming that somehow a homicide victim will have “this was justifiable” tattooed to his forehead, and that nobody would ever falsely claim the homicide was justifiable. So you’re starting out having already assumed the homicide was justifiable, whereas nobody else involved knows whether it was or not.
Again, when they have probable cause to believe that one person violated the statute prohibiting the UNLAWFUL killing of another a charge is filed. Accident or justification go to the issue of whether the killing was unlawful or not. If the prosecutor does not believe the death was accidental or justifiable, a charge is filed.
In other words, there’s no such thing as a charge that says, “we believe this guy lawfully killed someone”. In that case, no charge would be filed.