I don’t see harm by them not being allowed to wear it…

How would you feel about somebody banning your favorite attire? What right do they have to tell you what to wear?

And you should talk about all religions, but only in a negative way.

Why? Even though I’m an atheist, it’s also clear that religion is often a source of comfort and community to many people, especially during times of hardship. And by learning a little about different religions we can learn to be more tolerant of people who see the world differently.