The kid may have a psychological problem, but so do the "owners" of the turkeys.

I would vehemently argue that, whether it is conscious or not, anyone who condones the slaughter of his or her fellow feeling beings for any reason has a psychological problem. When Carl Jung spoke of the Collective Unconscious, this was one of the criteria to which he was referring.

You may not mutilate and murder the turkeys, but we can. We own them. It seems to me it is abundantly obvious how this attitude has poisoned the Collective Unconscious of the Planet for countless millenia.