Now that journalists are given more range,
here is a Boston Globe article that sheds a lot of light.
In interviews yesterday with teenage fighters, a leader of Islamic Jihad, an elderly man whose home was at the center of the fighting, and other Palestinian residents, all of whom were in the camp during the battle, none reported seeing large numbers of civilians killed. All said they were allowed to surrender or evacuate when they were ready to do so, though some reported being mistreated while in Israeli detention.
Apparently these folks didn't get the fax telling them to shout massacre at the top of their lungs. Maybe that's because they were busy organizing 50 children in groups of ten, assigned to ambush Israeli troops. (According to the story.)
The more you know...