you can say martin was wrong to attack (i disagree, especially given the circumstances of the night) but this opens the question of what is "public"? he's not following him around at the county fair. (what if it they were walking through abandoned woods, is that still "public"?) this is a gated community and no one else is around and its night, that's scary. you take a short cut and try to lose him and then he gets out of his car and heads in your direction. maybe you are concerned with some statute somewhere, but all common sense and basic decency shows zimmerman to be an aggressor. what is martin supposed to walk in his front door so this possible murderer or rapist or whatever can know where he is living..?
as for that gun comment, i don't get it. i'm concerned that this will be used to hurt the second amendment because most gun supporters aren't calling zimmerman out on his reckless and threatening behavior.