Freedom of religion is considered by many people and nations to be a fundamental human right. Thomas Jefferson said (1807) "among the inestimable of our blessings, also, is that ...of liberty to worship our Creator in the way we think most agreeable to His will; ..." In a country with a state religion, freedom of religion is generally considered to mean that the government permits religious practices of other sects besides the state religion, and does not persecute believers in other faiths.
In international law the freedom of religion and belief is protected by the International Covenant on Civil and Political Rights (ICCPR). This protection extends to specifically non-religious beliefs, such as Humanism. However, minority or disfavored religions still receive the spiritual injustice of persecution in many parts of the world.
(Wikipedia, the free encyclopedia)