Richard, do I understand your 21 May 06 - 08:38 PM post to mean that [some]Black people where you live use "spook" as an abusive term for White people?

If so, with all due respect, in what country do you live?

In the United States, my experience has been that when it is not used to mean "a spy", the word "spook" is usually used as a derogatory term for Black people. This meaning seems to be confirmed by that word's listing in the Urban Dictionary

Your comment raises the possibility that offensive terms can have one referent population in one part of the world, and a different referent population in another part of the world.

Of course, neither practice is good. But still, that shift in targeted population would be interesting from a cultural point of view.