No (not unless you are in a lawless hellhole). You shouldn't be resorting to physical violence without more proof than "he put his hand in his pocket". Jesus.
No, that is not the argument, as has been pointed out repeatedly by OnlyTellsTruth. Frankly, this isn't any better than the complaint that we think the Martin Attacked Simmerman,, because Zimmerman got out of his car.
In truth, in Zimmerman's own words, had no reason to find MRtin suspicious, and yet, he called the cops, and then pursued Martin both in car, and then on foot.
This, alone, is a threat.
And then, when Martin magically appeared and asked Zimmerman if he had a problem, Zimmerman, said no, and t*then* reached into his pocket. And in response to an unknown person pursuing him and sticking his hands n his pockets, Martin hit him.
As far as I care, Martin was absolutely in the right in this. And I find it telling that the pro-Zimmerman crowd refuses to account for Zimmerman's actions, both as recorded on his police call, and according to his own after-the-fact statements. If you really thught that creeping after someone in your car, and then jumping out of your car to chase after someone who was just looking around while walking home, was completely non cent, then you'd make that case. But since you insist on avoiding that discussion, I assume that you can't justify it.
And the reason is obvious. Pursuing someone is a plainly aggressive action. Walking home from the store, wearing warm clothing in February in the northern hemisphere is not. Covering your head is also not aggressive. I have no idea why someone would chose to defend a fool like Zimmerman, and I don't really care. It's pretty clear that he was the instigator, and this deserves no cover of self-defense.