Your car is attacked by dog poo, your reaction? [Details]?

Imagine you are almost home, you are jamming to your tunes then you have to stop at a stop sign. Then you hear a thump and see a streak of moist dog poo across the hood of your car. You look around to see two boys dashing off after discarding their plastic bag catapult. However, even from behind you recognize one of the boys as the kid of a really douche bag neighbor because of his unique hair cut and his favorite team jacket he always wear when cool out. If you could not get evidence on film would you even bother to go over there and say what the kids did to your car?