Ebbie, here's the story of the My Lai Massacre. I didn't care to search through for pictures of the slaughter though. The words in this quote are effective enough.

"Charlie Company met no resistance; there were no Viet Cong soldiers at My Lai. Calley then ordered the slaughter of the civilians. People were rounded up into ditches and machine-gunned. They lay five feet deep in the ditches; any survivors trying to escape were immediately shot. When Calley spotted a baby crawling away from a ditch, he grabbed her, threw her back into the ditch, and opened fire. Some of the dead were mutilated by having "C Company" carved into their chests; some were disemboweled. One GI would later say, "You didn't have to look for people to kill, they were just there. I cut their throats, cut off their hands, cut out their tongues, scalped them. I did it. A lot of people were doing it and I just followed. I just lost all sense of direction."