I am beginning to sound like a perverted @sshole here when I say you ain't heard or seen anything like in the Nepali being beheaded in Iraq.
You say you heard the gurgling sounds in the Russian soldier video, well in the one about the Nepali, the whole freakin' voice box pops out and moves involuntarily, all the while making squealing and wheezing sounds. Guaranteed to make even a decent Muslim turn against Islam. Don't watch it, it will damage you permanantly.
Follow my advice: DON'T WATCH IT.
lol.....alright, I won't.
Video and audio aint jack. You really have to smell, taste, and yes feel the whole thing to gain an appreciation. I still contend that it is not appropriate for any child, and most adult humans. Evil exists in this world. That is no reason to impose the "experience" of evil upon children, or other humans. I certainly never asked to experience unspeakable evil events firsthand.