All causes are essentially mental, and whosoever comes into daily contact with a high order of thinking must take on some of it.
In the middle of the night, when you're ambiguously ethnic, like me, when you're brown, beige, mauve, siena, one of those lighter browns in the Crayola box. You have to be careful of the cops and robbers, because nobody's quite sure what you are, but everybody has assumptions.