Anecdotally, it seems to me HR employees are akin to "Party Members" / "Card Carrying Members" of a communist country (forgive the analogy). Usually very zealous about the company, usually have drunk the kool-aid, usually believe all of the lore and the promulgated principles / company guidelines. I'd think the head of state for a communist country would fear most the zealous card-carrying member, vs the apathetic proletariat. The zealous card-carrying member is the most likely to become disaffected once the illusion fades.

edit: seems I wasn't the first to make this connection (beaten by 4 minutes)