There's a danger that it'll be not just rich white people who are affected if the SCA conclude that it's not ok to shoot at a perceived intruder if you think you may be in danger. The guy who shot through his roof and killed a man couldn't see who it was, could have been in no danger and had other options..and the woman who shot her husband twice in their garden. Likewise she had other options, was clearly shooting at a person she couldn't see and must have shot accurately twice or many times inaccurately to hit him twice. Neither sound wealthy and the man is black. These cases might end with murder convictions or attempted murder in the case of the woman if the things some on here say should make OPs case murder are considered. There are differences but it's not clear that in either case they could say they were in greater perceived danger than Op. It seems pointless to keep saying that there was no danger as though this makes a relevant point. Surely you mean that he could not have perceived any danger. Though that could be true in both of the cases mentioned above.
I guess there is a fine line from exercising the right to protect yourself from what you may perceive as an imminent threat of bodily harm and "going commando" at every bump in the night, but identifying your target with a simple "Who goes there?" would prevent many of these cases of mistaken identity where a family member is accidentally shot and killed. That a trained and licensed gun owner like Oscar failed to do so resulted in the CH verdict-- he was clearly negligent in not identifying his target when he had ample time to do so (no one jumped him or actually attacked him, nor did he actually see anyone breaking and entering his home.)
I would go further though-- his actions were not simply negligent, Oscar granted himself the authority and permission to shoot to kill whoever was behind the toilet door. His excuse was that he was afraid of what
might be behind the door. He did not feel obliged to find out if there was or was not an actual intruder behind the toilet door, he felt entitled to kill them regardless.
This word "regardless" is key for me in understanding the degree of culpability for his criminal actions. Oscar over-reacted to the simple sound of a window opening and a toilet door closing in his own en suite bathroom when an overnight guest would quite naturally be expected to be using these facilities. (I personally believe there was an argument, the victim's screams were indeed heard by neighbors, and he knew it was Reeva in the toilet, thus premeditated murder.)
However, even if you are unwilling to accept the totality of the circumstantial evidence, you should be able to evaluate if Oscar used deadly force in a reasonable (and legal) manner. I do not believe he did-- even if his intention were to protect himself and Reeva from an intruder, he chose, or allowed himself to be judge and executioner of the
perceived intruder. Oscar, acting like some over-inflated superhero (an annoying trait of the Pistorius brothers) was always ready with a loaded gun, prepared to use it at the slightest provocation or opportunity. The only problem is that he lacked the maturity and judgement to know what constituted an appropriate use of deadly force. It was more than a simple case of putative private defense-- I don't care how bad your crime rate is, no one should be allowed or encouraged to blast away at every creak in the floorboards or the mere sound of a window opening on a hot night when the a/c is not working. This is beyond negligent-- it requires a willful and reckless disregard for human life, something Oscar frequently exhibited by driving at deadly speeds and mishandling a loaded firearm in a crowded public place.
He knew full well that he killed whoever was inside the toilet cubicle after unloading four Black Talon type bullets into that space and he did so intentionally. If you are willing to excuse his actions as a simple mistake, it tells me that you value his life much more than that of his victim, just as he did.