This is horse crap. Many of you have probably already seen the video, and never realized you had witnessed this "execution." It never happened. Those who are convinced that these monsterous terrorists are actually the good guys will stop at nothing, certainly not the truth, to cast our troops in a bad light.
For one thing, the "victim" is never shown on camera, since he was behind a brick wall at the time. As far as I can tell, the "victim" was an enemy sniper who had been wounded and fell between a couple of buildings. The marine did exactly what he is supposed to do in a war; kill the enemy. There is NO way to tell if the enemy was unarmed or not. It's a reasonable, probably necessary, presumption that an enemy sniper who was just trying to kill you minutes before, was NOT unarmed.
That whole story is a slanderous, steaming pile of manure. ...as if anyone wondered.
Very good point. Also remember if they will forge a document to slander our President they will edit a video to suit their purposes.