2.2.  Blacklist-Whitelist

   The metaphorical use of white-black to connote good-evil is
   exclusive.  While master-slave might seem like a more egregious
   example of racism, white-black is arguably worse because it is more
   pervasive and therefore more insidious.  While recent headlines have
   decried the technical community's use of master-slave, there is far
   less discussion about white-black despite its importance.  There is
   even a name for this pervasive language pitfall: the association of
   white with good and black with evil is known as the "bad is black
   effect" [Grewal].