Religious freedom: When does it go too far?

     The freedom of religion, used by most Americans, is one of the greatest rights a citizen can have. We have the right to choose what to believe in, and not be persecuted for the decisions we make. But where does it go too far? For instance, if a religion required human sacrifces would that religion still be tolerated? Understanding the rules of this country, I would say no because it's murder, which is illegal in the United States. However, if the freedom of religion is expressed in that way, isn't that their right? Where is the line crossed? These problems must be addressed,