If that is what the OP means, I've got this to say -- and I say it not as a nurse (I'm a student), but as a human being.
I live in an area whose population has shocked me at times with blatantly negative attitudes. Not only in regards to race (there is a large Mexican migrant worker population here), but also in regards to homosexuals, Muslims, and women who have had abortions, among other groups.
I have heard people in a clinic waiting room say that a man who'd recently died had deserved AIDS because he was gay. I listened to a black woman in one of my prerequisite classes say that she wouldn't give CPR to a Hispanic, because she didn't want to take the chance that she was helping an illegal. I've heard a pastor say he'd never offer help to a woman who was open about having had an abortion. It comes in smaller comments too; I can't tell you how many off-the-cuff negative stereotypes people are careless about spewing from day to day.
If people are willing to say things like this in the open, I can only imagine what else is in their heads. I've been on the receiving end of a bad situation regarding my mixed heritage myself, and I can never automatically discount it when someone claims an instance of prejudice. What goes through people's mind influences how they behave, whether they want it to or not.
Is it always true when claimed? Of course not. Sometimes it's just frustration coming out. Sometimes it's not even that -- I don't argue that people do tell falsehoods for gain. It's a shame that it happens, especially because it masks a very real problem and devalues the situations of people for whom it is the honest truth.
All I can say is if you never want to be accused to behaving in a biased manner, then don't behave in one. So that if it ever comes up that someone claims you did, you can in all confidence tell the truth.
