A reason that some European countries use in recent laws that ban women from wearing full-face burkas/niqabs, is it stops the wearers interacting/communicating with others. The same logic implies we should ban public wear of headphones. https://en.wikipedia.org/wiki/French_ban_on_face_covering "The key argument supporting this proposal is that face-coverings ... [are] a social hindrance within a society which relies…
Are you sure that's the reason? I'd imagine it would have something to do with the laws (at least here in Denmark) around it being illegal to be fully masked.