Although human rights belong to all persons on the basis of their humanity, this book demonstrates that in the practice of international human rights law, the freedom to be non-religious or atheist does not receive the same protection as the freedom to be religious. Despite the claimed universality of freedom of religion and belief contained in article 18 of the International Covenant on Civil and Political Rights, the key assertion made is that there is a hierarchy of religion and belief, with followers of major established religions enjoying high protection and low regulation at the top, and atheists and non-believers enduring high persecution and weaker protection at the bottom. The existence of this hierarchy is proven and critiqued through three case study chapters that respectively explore the extent to which non-religious and atheist rights-holders enjoy freedom from proselytism, freedom from hate and freedom from the religions of their parents.