A prisoner. He cannot keep up so Khattab shoots him like a dog. I am posting this for no specific reason other than the view I personally hold of what the leader thinks of another life, which is - nothing.
I have seen many, and longer versions, of this video. It has always ended with Khattab et al walking away from the prone man, one thinks he has just dropped from exhaustion and is being left behind for the animals. This is the first time, ever, I have seen Khattab execute the man. That part has always been left out.