Well I was wanting to be clear on how exactly Spivey would define racism..
I would say pretty much what you did..as in a racist is someone who believes he or she is superior to people of other races (than his or her own), and largely acts on those beliefs..
In this country, no one but white people have been able to act on their potential belief in their inherent superiority to non-white people..
I would LIKE to think that (harking back to something I said before) if People of Color ever reach the top in great and overwhelming numbers in this country, whites won't then be treated as less than human beings..