I do not believe banning religious symbols is important and certainly not something as simple as wearing a hijab. I believe people should have the right to decide whether or not they want to wear a hijab, it should not matter what their reasoning for wearing it is, as long as they are making the decision for themselves.
Unless it is detrimental to others, there is no reason to ban religious symbols in public. There should always be freedom in society to express yourself in whatever way you wish as long as it does not harm others around you. Religious garments should not be banned given this reason. It would seem ridiculous to ban Christians wearing cross necklaces or Jewish followed to not wear a yamika.