The government can not make someone Jewish, Hindu, or Muslim, nor can they stop someone from being one. They can stop a person from a religious practice if it hurts somebody else. You can't kill someone even if it is part of a religion, because that would hurt that person.

This is true for city governments too. At Christmas time cities sometimes get into trouble for putting up nativity scenes, because that would be helping the Christian religion and ignoring others. Schools have Spring Breaks and Winter Breaks, rather than Easter Breaks or Christmas Breaks. Schools can not promote any religion because they are operated by the government.