I played through it and felt sorry for them, even though they're just pixels.
lol, I'm sorry if you didn't want that to be funny; I just found it humorous.
I have watched a couple videos to know what everyone means. It is a.. gruesome scene.
I also read an article on msnbc about this level, talking about the "realism" in the game.
I guess there **SPOILER** is a mission where you repel down and slowly kill a guard. Where you watch the life leave his eyes. /**SPOILER**
I suppose you just have to remember, it's not real, It's a video game.