From Der Spiegel:
The suspects are accused of having killed civilians for no reason and then of trying to make it look as though the killings had been acts of self-defense.
Adam Winfield, 21, described the incident to his father in a chat on the social networking site Facebook. "They made it look like the guy threw a grenade at them and mowed him down,"
The full article, including some very disturbing photos of soldiers posing with the dead as though with a trophy, at:
This act alone will recruit dozens to take up arms against American and NATO troops. The court martial must be swift and public or a bad situation will become still worse.