No matter where you are, no matter how private you thought it was or how safe you were from unwelcome solicitations, a crazed man runs at you and shoves a parchment into your hands, before dashing off to his next unsuspecting victim. It reads:   "Dear reader,    In the interests of stopping this current epidemic of ethnographical misnomers, the Barclay Foundation for Accurate Ethnic Representation has produced the following guide and clarification on commonly mistaken terms p