How about the ISIS fighters grow some balls and do not use civilians as human shields.  They are the ones ultimately responsible for the civilian deaths.

Civilian deaths could have been avoided if they were allowed to leave the combat zone.  Instead ISIS is forcing them to stay or be shot.

The guy deserves the death penalty.  Isn't that what these ISIS fighters are clamoring for?  To be a jihadi who dies and goes to the big harem in the sky?