Man, that is a REALLY aggresive stance that Kerry has. Nobody, and I mean NOBODY is allowed to get in my face like that and put their finger on me. REALLY bad! Threatening.
Look at it closely, I don't think that's his finger. It looks like he's trying to palm off some of his campaign stuff (looks like a card of some type) and the Marine is not making a move to take it. As a matter of fact, you can see the young Marine reflexively starting to clench his fists as he controls his anger.