I am glad to have learned the titles of some of these films. Now if I find any of these in a signifigant other's, heck even a friend's, movie collection I know to end that relationship. Films like these clearly illustrate what is wrong with humanity and how many people are just *beep* up. I know that I am on the extreme end when it comes to being against violence and pain but I think people who enjoy these types of films are disturbed. Gore when it is obviously fake can be amusing but not gore that is intended to look as real as possible. (To actual require evidence that they were not real) Also the fact that some of these movies had real violence against animals. I can't believe they would advocate that (which is what the film is doing however subtly) since many serial killers started with torture to animals. It makes me wonder what dirty secrets these filmmakers have of their own, since often these movies don't seem to be making a political point. Frankly if I was in control of the world I would not allow the existence of movies like this, the purveyors, or the buyers. Obviously most of you on here enjoy this type of thing and you might find this offensive but I find your existence offense. It scares me that there are people walking around who enjoy this because I can see how easy it is for some to go from watching on-screen to watching in real life.
I also believe you don't throw away your ethics to make a film. I agree with the author that killing animals just to film a scene is not only wrong, but criminal.