The human stain!

I have just watched the movie 'the human stain' starring Nicole Kidman and Anthony Hopkins. A wonderful movie which centre's on how life could be when based on a false premise. This false premise here being the protagonist's pretense to be white; or passing as it was known. I remember doing quite a bit of reading on the phenomenon but seeing it happen in that movie was....
In America especially, it was not uncommon for light skinned black people who looked Caucasian to pass for white. Passing often meant giving up one's history, heritage and even immediate family. Can you imagine walking past your mother in the street and not being able to at least say hello? I remember reading about American fascist Lawrence Dennis who although anti-Semitic and possibly a Hitler sympathiser, passed for white. He was black as they came. He i think, presents a classic case of passing and the ironies that follow misrepresentation.
Passing was greatly explored by Harlem Renaissance artists like James Van Derzee who told stories about it through photography. Perhaps an even more harrowing account of this would be seen through accounts by Writer Sally Morgan who uses the Australian example as reference. She tells of how mixed race children (part aboriginal) or those who could pass for white were removed from their homes and moved to hostels to ensure segregation....all of this happened in our not to distant past.
What about our present? Does passing not still happen? Maybe not on the face of things i.e. colour and the like. However, there are other aspects of society to look at. Discrimination still occurs and this leads to people structuring their lives around social constructs. Are you passing? Are you encouraging passing? How do we stop this?