If he acted without the knowledge that he was acting unlawfully or that his actions could have unlawful consequences, then he wouldn't have had the criminal intent.
Wrong questions still-- It's not sufficient to just claim to have "thought" you were acting lawfully. Especially when you have killed someone. The court wants to know what led you to believe that you were acting lawfully under the circumstances of the killing. You have to JUSTIFY your actions.
I am going to keep trying to re-phrase this:
In a prima facie case of unlawful homicide, the onus was on the accused to
justify the killing.
He tried to justify it as both automatism and PPD. Masipa ruled out automatism so that was not up for consideration by the SCA.
Masipa erred in her review of his PPD claim with vague and illogical conclusions, so it was up to the SCA to review. To justify the PPD claim, Oscar needed to provide some factual basis for why he believed that an attack had commenced or his life was threatened by an imminent attack. He also needed to have substantiated the use of lethal force as proportionate to the threat of attack against him.
He was not able to satisfy the SCA with his rationale for believing he was under attack-- they found he offered no
legitimate basis for thinking he was being attacked. (Sounds of a houseguest using the toilet in the middle of the night did not qualify as "knowledge" of an imminent attack on his life.)
What he claimed to have "thought" is not as legally significant as what factual basis he used to justify an unlawful killing. What would the accused have "known" at the time he killed someone--
1. He thought there was an intruder and there were potentially corroborating "facts" as Masipa tried to point out. Yes, the window was open. Was this sufficient basis for "knowing" his life was in imminent danger to justify killing someone in purported self-defense?
But the poor lad was vulnerable and AFRAID! Does that justify his homicide as self-defense-- not according to the law.
But he fired out of panic and fear! Is Oscar justified in confronting a presumed intruder and executing them in a panic before even establishing their identity and if they represent a threat?
Poor boy. He was so afraid. How could he have been expected to know that no attack was underway or that an intruder MIGHT not come out to get him?
Better act quickly, Oscar. Kill them before they have a chance to get you. BTW-- as far as DE goes, how could he NOT foresee his actions could kill someone behind the door?
Oops, guess he should have followed the laws for self-defense.