Legally you're right. Justification is important, but I stand by my point that the whole thing has gone way beyond the legal question and has become an exercise in just how many blacks can play the phony victim card.
Let's examine two incidents: Zimmerman and Strait. In the Zimmerman incident a black yout was shot by a person that it appears that he was in the process of beating. Black killed = black crocodile tears and black lynch mob headed by filth like sharpton baying for Zimmerman's blood.
Strait case. 85 year old white woman raped and beaten to death by black yout. Total US media silence and total "black community" silence. Or to phrase it another way. when what may indeed be a justified killing of an alleged thug, the blacks push their own texas sized chip of their own shoulder, and when a black scumbag kills an old white woman they just don't care.
Last I read, no suspects have been found, questioned, or arrested in the Oklahoma case. When/if they are, it is doubtful that they will try to claim that their actions are justified or that the injured parties somehow deserved it.
IF they do claim their actions were justified,
and IF the police agree with them and let them go,
and IF the DA reviews the police decision and declines to press charges,
and IF there is no public outcry as a result,
THEN you will have a valid point about the media silence.
Until all of those things happen, you're comparing apples and oranges.