Going out on a limb and saying he's an American. I think people here are somewhat conditioned to say that about everything because you can CYA when you overreact.

I suppose I should have said "possible threat". I do a lot of combat/defense training and after a while you become conditioned to assess those that are behaving oddly or breaking social norms. I tend to see his actions as somewhat agressive.

I don't think that is a very strange view to have. Even if you look back to early ancestors, monkeys and animals, most of them don't like being singled out or stared at for this reason[1].

[1]http://en.wikipedia.org/wiki/Dog_attack#Factors_related_to_a...