I think that attitude does still pervade in areas that are not diverse
It happens in areas that are diverse as well, unfortunately.
I look fully white, but my background is mixed. My sister and middle DD (the colouring skipped me) are olive skinned/brown eyed, have 'black' features and suffer prejudice because of that.
Because i have a mixed family, i understand what is racism, more than those around me that swear they are not racist, but air discriminatory views.
They don't air these views around anyone who isn't white, but unless you know my family, you would think that i was, iyswim, so i hear much more racism than my non white friends/family.
My Mum left one area that she lived in because of what she was called and it went towards her decision to end one of her marriages.
I thought that this thread was going to be about the disrespect that i hear towards Asian/Thai women, because even when woring as nurses i have heard frequent 'sucky, sucky 10 dollar', jokes aimed at them.
OP, a lot of people do see an attractive Asian girl and link her to the sex trade.
So i can understand what you mean if it is a smug sort of smile.
Racism takes many forms, as does sexism, it is just a matter of applying negative sterotypes and assumptions to the person that they are looking at.