As a mostly intellectual exercise, I've been trying to come up with an example of a religion that gets special rights based on their beliefs, as requested by Larry Brown, and I think I've come up with something close. Members of Federally recognized Native American Tribes are allowed to possess and use bald eagle feathers for religious purposes. That would be a crime for most others.

Not a perfect example, I grant you, but the best I could come up with.

Nothing the government gives you is free.