Yep, just an "isolated incident". Here's something from the CBC.

"3000 Prisoners Slaughtered in Afganastan

This video is about how the US slaughtered 3000 Afgan prisoners of war. The
video is big - 55 megs download and it is shocking. It makes the Black Hole of
Calcutta look like a picnic. These prisoners were left in sealed truck
containers to suffocate and fry in the hot sun. The few that survived a week
were taken out and shot an buried in mass graves.

The video is EXTREMELY disturbing and it will give you nightmares. If you are
not ready to see this footage - DO NOT WATCH IT !!! This is NAZI level stuff."

http://marc.perkel.com/images/AfganPOWsKilled.mov