My guess is that it has something to do with the decapitated animals that are found on farms from time to time. Usually gets blamed on some group of weird little teenagers or if the tabloids get a hold of it they turn it into a UFO thing!
Well, I took the bait - it is a musical group. It is gross (to say the least). They have several albums (I did not try to listen to them) and the album covers are of mutilated cattle, etc. They seem to be catering to the veggie people. Very sick.