1) The police aren't there to help you, they're there to record a statement from
-You
-The "aggressor" (he'll say you're the aggressor, not him)
-Witnesses
2) You'll need to lawyer up. You don't tell the police fuck-all until you have a lawyer perched up on your shoulder. If they arrest you? Who cares? On-the-spot interrogation? Not a peep until you have your lawyer. Real life is that some District Attorneyes are assholes and hate the world, and they will hang you for the hell of it.
That means:
1) No talk about your gun (50% if the case right there)
2) No talk about why what you did was justified
3) No talk about why you're fucking around in an alleyway at 2 in the morning
4) No talk about *even laying a finger* on the aggressor
Just
>Here's my ID officer
>I was assaulted by this man
>I want my lawyer
Then you shut up. Not another thing. At all. Drill that into your damn mind. Whenever you state "I acted in self-defense," that's an admittance, according to law, that you used force (deadly or otherwise.) After that, the *burden is now on you* to prove in court (assuming the DA presses charges) that your use of force was justified.
Whatever you say is a statement that will be used against you and it cannot be used in your own defense. It will fuck you over and you'll be wishing that corpse killed you instead.
Afterwards, two things usually happens:
1) You're let go (you'll be questioned later)
2) You're in jail
Either way, you have a right to a legal rep (public defenders are worthless, get a real lawyer.) If you weren't imprisoned, write everything down. If you were, play it over and over in your head so you don't forget (if you write it down in jail, some detective is going to start sniffing around and crucify you with it.)
The lawyer's hardest job is unfucking your fuckup when you testify against yourself when you talk to anything that remotely looks like an officer or (God forbid,) the news media.
(Cont.)