Hitchcock's Documentary on the Holocaust

Germans perhaps but is there any other way to watch in besides HBO? A friend saw it & said it was almost too graphic to watch & he came close to walking out mid way it was so graphic for so much of the movie. He described one scene in which 10+ children were lined up laying down, and they were all completely bled dry of blood. He said their final agonies were unwatchable.I am interested for its historical perspective, not for any obsession with grossness, as one review said it is the most definitive movie on the Holocaust ever made & Hitchcock is Hitchcock when it comes to high quality movie making.