@ jlmiller - I understand your hatred towards racism and I am sorry you have had to experience it as much as you have during your life, especially the job interview as you stated, that it pretty disgusting.
However I do believe that it's pretty obvious that a working lady is offering a service that is quite different and unique from any other profession...
When we are talking about intimate contact with a person's body, that person is completely and solely in charge of who has access to it, period, and if a working lady has a preference of ethnicity then that should be respected, she has no obligation (unlike other professions) to be open as to which race she accepts.
If she advertises her preferences publicly, then sure some people may be offended, but honestly, if you are reading advertisements for adult services, I highly doubt you are easily offended anyway...
As for racism as a whole, sadly it will always exist, it will never be stamped out, not in a million years. But as far as equal opportunity goes, in Australia at least, there is definately no problem these days, compared to the past.
I know you are African-American, but I will use aboriginals as an example in Australia, I would argue that it is easier to find employment, to gain an advanced education and to be successful as an aboriginal citizen than it is being any other race in Australia, for the simple reasons that:
* Aboriginals receive free education.
* Aboriginals receive free medical treatment.
* Large businesses actually have government incentive measures in place to hire aboriginal workers.
Really, at least from my experiences, it would be easier to have a business career in Australia as an aboriginal, than being caucasian.