In California, where WASPs are now the official minority, girls DO come to school in headscarves and something like burkhas, and it generally seems to work--so do a few of the teachers. Not that CA is hate-crime free, far from it, but for the most part, choice of clothing (except when too scanty) passes unremarked. Multiculturalism, separated from poverty, seems to work pretty well. And most of the men who do commit hate crimes, if not actually impoverished, feel dispossessed.