"In schools, again, facial expressions are an essential part of communication. The pupil must see the teacher, and the teacher must see the pupil. In commercial and social transactions, the same comments apply. And of course we already ban motorcyclists from covering their faces with crash helmets (although for different reasons) in banks. It may not be a major issue for most of us, but there have been cases of (usually male) criminals and terrorists covering themselves in the burka to commit offences...."
I once overheard a feminist describing burkhas as liberating to some other silly bitches. And it's true - they liberate women from the shame of showing their bruises. After all, the koran does tell men how to beat their wives.