I have no reason to either believe or to doubt your word on this matter, but I have never heard this before. You (and others) may have all kinds of evidence of this assertion, and the accompanying right to call me uninformed. I am no lover of the Clinton's, just the opposite.
I just want to know - what is the source(s) of this assertion?
play the ethnic slurs movie. It contains the documentation, as does the linked essay.