It's a war zone. Shît happens.
That is indeed, the harsh reailty
But other reports suggest that the Israelis are shooting everyone on sight. Would certainly fit in with their usual propensity for war-criming.
You can say of them what you want, but at least they took full responsibility, shooting everyone on sight doesn't really add up with all those video's of hostages we see, evacuation corridors etc. now do we?
However other information from this particular event suggest chaos because Hamas just before had tried (and possibly been succesfull) sucide bomb attacks on isreali forces, also with an seemingly unarmed person. (in case you believe those media claiming they strip hostage in their underwear out of humiliations, not true they just don't want to be blown to pieces)