Google "beheading of six russians" and click on the first suggestion. The link will take you to the "Best Gore" site where you can watch the video. There's also a full translation of the Russian boy who screamed for his mother begging for his life. I'm warning you, the translation alone will tear your heart out, and as for the video...
The first three sections are posted one after the other. The boy in question appears in part three. He was called Aleksey Lipatov. He's wearing a blue tee-shirt, and to make matters even worse, he's not just cute, he's beautiful, with a light, boyish voice, and he looks so innocent and sort of bewildered, as though he just can't understand what's happening to him. Part three breaks off before his screaming starts. If you think you're strong enough to deal with it, click the link that takes you to the rest of the video.
Two recommendations if you decide to watch it: turn the sound on your computer down real low, and if you have a 'sleep' button on your keyboard keep your finger poised above it, because it's so terrible that it could wreck your head, and you need a way of shutting it off IMMEDIATELY. I'm warning you, it's a thousand times worse than the Mexican video. I'm warning you mate!