It’s justifiable ‘killing’ in response to Trayvon’s attempted murder (skull bashing and attempted smothering).
I appreciate your comment. I still would not say that Zim “killed” the man.
Semantics is the universe of the Justice system.
By way of example, one of the Commandments is “thou shalt not steal”.
Therefore, if I am accused of stealing and am acquitted in trial, am I still a “stealer”. Was I ever a “stealer”?
NO.
It works the same way with “thou shalt not kill”.
Again, IANAL. But I could play one on TV, if anyone wants to offer.