Does anyone remember the Jenin Massacre? Pali-scum claimed the Israelis went into Jenin and slaughtered 100s of "refugees". The body count was much lower of course and they were mostly wanted terrorists. But the media ran with the story, the UN sent a "commission" and Israel was roundly condemned. As it turned out, there was no massacre and the firing by Israeli troops was in response to be fired upon. Once the truth was out, no one apologized, the UN slunk (is that a word?) back home, and the media moved on to the next Israeli outrage.
I have a hard time believing that Marines killed innocents for anything. I could be wrong, but we only have a fraction of the story. If they did, Im inclined to think that the murderers killed the Marine and then hid in a civilian area and fired on the troops, hoping for collateral damage knowing a willing and compliant media will blame America...again..