He's a fighter? Sounds like a coward to me.

He allows some jerk to get under his skin (the guy may or may not be a jerk - I don't know him or his back ground...) in a world full of jerks. It will only get worse if he becomes president. If he can't take a little ridicule now, it's only going to get worse when(if) he's under more pressure as President. And this isn't the first of his outbursts and childist behaviour since running...

Anyway, he lets some guy get his goat, then instead of either being a man and walking away, or being a 'fighter' and actually giving the guy a well placed and well deserved chin shot, he resorts back to the 4th grade and gives him the finger - knowing that his SS agents will protect his pansy a$$. Sure, sounds real tough and brave to me. Walk away or duke it out. Name calling, crying, and flipping the bird are all childish.