It doesn't - but I think there's a general understanding that beating people up because you want their money is wrong - from the point of view of society in general, and, of course, the guy getting beaten up, at least. It's because beating somebody up, or denying them a job, etc, because they're black, white, jewish, gay, whatever, must ALSO be seen as wrong that communities have to guard against the spread of the idea that these attributes make people somehow worth less.
This doesn't mean that we have to delude ourselves that all people are equal in all respects, when clearly they are not, or that racial profiling doesn't have a place, when actually race may sometimes be an indicator of cultural factors that may prove relevant to a given situation, if nothing else, as q93 has apparently noticed whilst driving.
In the U.K., 'fruit' would be recognized by most, I think, as a term of abuse against gays (albeit a mild one) imported from the U.S., whereas "fruitcake" would be understood to mean 'crazy', as in "nutty as a fruitcake".
While mapleleaf's contention that Sicarius is the progeny of a "squaw" prostitute is already blatantly racist, given that "squaw" is a) arguably a term of racial abuse, and b) wholly irrelevant to whatever point mapleleaf thinks he's trying to make, his defense omits the fact that he has also referred to Sicarius as "Hiawatha" and "Geronimo" - he's not very good at racial abuse against native Americans, I admit, but he's doing his best....
I'll take someone who chooses to eat from dumpsters over this fruitcake any day.