A picture at below link shows how Turkey banned burkha.
All democracies suffering from Islamic terrorism should ban burkha because you never know who is under burkha.
It could be a terrorists. If the burkha wearer is a Muslims lady, it is very likely that her sons and grand sons may become terrorists. I think that when a kafir public sees a burkha wearing person, they all should shout loud – “terrorist, terrorist!!”
It is not illegal to shout like that, and it may yield useful results.