Stopped reading after as a lawyer.As a Lawyer I can tell you it's very similar to how things work here in Oz (both jurisdictions are Common Law jurisdictions that trace our origins to the UK).
Over here he would get off the serious charges if he can establish that he was 'acting reasonably in self defence of a perceived threat' and the force he used was proportionate to the threat. Should he establish that defence on the balance of probabilities he walks, even if the elements of the murder charge are otherwise proved by the prosecution.
It seems as if in that jurisdiction (Wisconsin or wherever it is) all he needs to do is raise the defence, and then the burden seems to shift to the prosecution to prove he WASNT acting in self defence to the usual higher standard of 'beyond reasonable doubt'. In effect it seems to add an element to the prosecution case.
That's if Im reading that article correctly.
Importantly also this:
Kyle Rittenhouse trial: Understanding key legal issues in the contentious case - The Washington Post
And that's the key bit.
For mine:
1) He can invoke the defence of self defence, and the prosecution will have a very hard time proving his force used was not reasonable in the circumstances (angry mob, frightened boy, burning streets, at least one of the mob had a gun etc) and he likely wins the case on this point (defending the homicide charges)...
unless (and this bit is important):
2) The prosecution can prove he only found himself in the situation he was in, and facing the threat he was facing, because of his own stupidity in putting himself in that situation in the first place (i.e. it was his own damn fault he faced the threat he faced that required him to resort to lethal force).
The prosecution will focus on point 2 above. That's where this case lives or dies in my eyes.


