Human vivisectionist monsters. This is like something out of a bad science fiction movie. Only worse.
And that’s what we need to call them, folks: HUMAN VIVISECTIONISTS.
Jack the Ripper is their patron saint
Vivisection (from Latin vivus, meaning "alive", and sectio, meaning "cutting") is surgery conducted for experimental purposes on a living organism, typically animals with a central nervous system, to view living internal structure. The word is, more broadly, used as a pejorative catch-all term for experimentation on live animals by organizations opposed to animal experimentation but rarely used by practicing scientists. Human vivisection has been perpetrated as a form of torture.
Excerpt from the Free Dictionary