Tourist,
My expectations have always been the same as yours, sadly. My attitude toward the treatment of prisoners of war, however, is not affected by that. I understand the human will to take revenge on those that have sought to do you harm, but do not subscribe to acting on that will.
As hoodie, rightly says, "no longer a threat". One is a military objective, the other a barbaric act of revenge.
Now back to events at hand rather than the thread drift into the morality of war.