A lot of people seem to agree that torturing small animals is a sign of psychopathy.
But why would someone bother <snip> (warning: animal cruelty) tormenting helpless animals, and go out of their way to edit the video with music and subtitles? Is there any legitimate reason or is this person just mentally ill and possibly represents a danger to other people? Yes, yes... I know. Big step from animal to human but studies show it's not that big of a step if they key rationale is just to hurt something for the hell of it, or get enjoyment out of inflicting misery.