So you're going to literally make up your own nonsense instead? Because that's what you're doing.
If the officers want to argue that he threatened them with the weapon, they need to prove that they identified themselves properly or that he fired first. Because, again, you have the right to be armed in the USA, and in Mississippi, castle doctrine says you're perfectly entitled to shoot people who threaten you on your property. All the evidence cited in the article goes against this claim, other than the officer's testimony, which doesn't line up with the physical evidence and witness testimony.
That the officers killed the guy isn't in question, and isn't disputed. If the officer wants to argue that the killing was justified, they need to prove it. The onus for that defense is on them, and presumption of innocence does not apply there; they've already admitted they're guilty of the homicide, they're claiming they have a positive defense of that action.