I have posted two sources for this story because I am certain many will discount the fist account because of the source. If you disbelieve the first, read the second also.
[syrianews.cc]
This is the reason Marines were sent into Beirut. I recall the famous photo of a Marine officer standing on the glacis of an Israeli tank with his pistol pointed at the head of the vehicular commander and ordering them to turn around, they were not going into the camps again.
Highly disturbing, man's inhumanity to man. The victor writes the history books and hides the monstrosity of his deeds.