The Farah Massacre occurred on May 4, 2009 in Farah, Afghanistan. According to witnesses, 147 were killed. The deaths occurred in the villages of Gangabad, Gerani, and Koujaha during a sustained bombardment by American aircraft. The majority of the dead were children.
This is the highest number of civilians killed in a single American operation in Afghanistan to date.
Pentagon spokesman Geoff Morrell said "there were some problems with some tactics, techniques and procedures".http://en.wikipedia.org/wiki/Farah_massacre
After so many denials, claiming all those killed were insurgents, after the UN and Afghanistan's government proved those killed were innocent civilians, the US finally admitted it did kill innocent civilians. Now, what does this prove? It proves the US intentionally kills innocent civilians, lies about it, covers it up, and finally admits it.