system
Given the following post, respond as if you're commenting on Reddit:
human
[Seven] What happens to Detective Mills after the ending?

So, Mills has killed John Doe, executing him on the spot. 

What is the media response like? Does he wind up going to trial for executing an unarmed man? Would he be likely to face any time incarcerated? Would it be possible for him to plead a case of temporary insanity, or perhaps a crime of passion, given the fact he had just found his wife's head in a box?
gpt
Legally, it would be voluntary manslaughter: murder committed under provocations such that a reasonable person might utterly lose control. A man handing you your wife's severed head certainly counts.

Publicly? John Doe was a monster. Like, horrifically so. Few people will fault Mills. "Hero Cop kills Sadistic Serial Killer after he showed him his wife's mutilated corpse" gets everyone on Mill's side. And politically, cops have protected their own after far worse acts then this

He likely faces some punishment, maybe a short sentence. But not much. The man strapped some poor bastard to a bed for a year. No-one's chomping at the bit to avenge John Doe.