Goodness...I've not been here for a couple of days, and didn't realise I'd opened such a can of worms...
Just for the record, I'd like to say that I find racism utterly abhorrent, and whilst I should doubtless have given the thread a more delicate title, I don't regret starting it.
Thanks to all those who managed to understand what I was asking, and for all the intelligent replies.
Regards to you all
Ed