If few Marines killed the civilians then they must be punished severely. However we must put things in perceptive. This is one incident in 3 years, and the rarity of the incident is a great testimony to the discipline and professionalism of our troops. Liberals and their media are going to take advantage of this to further sabotage the war effort but they fail miserably as usual. In fact they will overplay their hands as they usually do and people at the end will see it as an attack on the troops in time of war.
I agree with your post. But please, let's not assume that it can't happen that some American snaps and kills a bunch of people. As I said above, I've got a bad feeling about this one. I think it's going to end up as a worst-case scenario from our standpoint.