This ritual DID happen on CERN property and was addressed by CERN.
"No, this video is a work of fiction. CERN fills up with visitors over summer, with users from across the world who come to CERN as part of their work, and some of whom occasionally let their sense of humor go too far, and that is what has happened on this occasion. CERN does not condone this kind of spoof."
@Orias is correct in saying that this is ritual, because it is. Whether or not someone is killed, it's still psychodramatism. I've never seen a mock/joke ritual go to such an extent.
The second video is a bit ridiculous to me because it is a useless ritual. These are men and women of science, but they're wasting their time with something that has no real purpose to it other than to show off to a few elitist parties.
All in all, I don't care if CERN is Luciferian/Satanic. In the big picture, none of it matters.