Freedom of religion is a principle that supports the freedom of an individual or community, in public or private, to manifest religion or belief in teaching, practice, worship, and observance. It also includes the freedom to change one's religion or beliefs.
Some of the historical exceptions have been in regions where one of the revealed religions has been in a position of power: Judaism, Zoroastrianism, Christianity and Islam. Others have been where the established order has felt threatened, as shown in the trial of Socrates in 399 BC or where the ruler has been deified, as in Rome, and refusal to offer token sacrifice was similar to refusing to take an oath of allegiance. This was the core for resentment and the persecution of early Christian communities.
Religious pluralism existed in classical Islamic ethics and Sharia, as the religious laws and courts of other religions, including Christianity, Judaism and Hinduism, were usually accommodated within the Islamic legal framework, as seen in the early Caliphate, Al-Andalus, Indian subcontinent, and the Ottoman Millet system.] In medieval Islamic societies, the qadi (Islamic judges) usually could not interfere in the matters of non-Muslims unless the parties voluntarily choose to be judged according to Islamic law, thus the dhimmi communities living in Islamic states usually had their own laws independent from the Sharia law, such as the Jews who would have their own Halakha courts.
The Dalai Lama, the Tibetan leader in exile, said that religious tolerance of 'Aryabhoomi,' a reference to India found in the Mahabharata, has been in existence in this country from thousands of years. "Not only Hinduism, Jainism, Buddhism, Sikhism which are the native religions but also Christianity and Islam have flourished here. Religious tolerance is inherent in Indian tradition," the Dalai Lama said.
Freedom of religion in contemporary India is a fundamental right guaranteed under Article 25 of the nation's constitution. Accordingly, every citizen of India has a right to profess, practice and propagate their religions peacefully. Vishwa Hindu Parishad counters this argument by saying that evangelical Christians are forcefully (or through money) converting rural, illiterate populations and they are only trying to stop this.
In 1414, Jan Hus, a Bohemian preacher of reformation, was given a safe conduct by the Holy Roman Emperor to attend the Council of Constance. Not entirely trusting in his safety, he made his will before he left. His forebodings proved accurate, and he was burned at the stake on 6 July 1415. The Council also decreed that Wycliffe's remains be disinterred and cast out. This decree was not carried out until 1429.
Bohemia (present-day Czech Republic) enjoyed religious freedom between 1436 and 1520, and became one of the most liberal countries of the Christian world during that period of time. The so-called Basel Compacts of 1436 declared the freedom of religion and peace between Catholics and Utraquists. In 1609 Emperor Rudolf II granted Bohemia greater religious liberty with his Letter of Majesty. The privileged position of the Catholic Church in the Czech kingdom was firmly established after the Battle of White Mountain in 1620. Gradually freedom of religion in Bohemian lands came to an end and Protestants fled or were expelled from the country. A devout Catholic, Emperor Ferdinand II forcibly converted Austrian and Bohemian Protestants.
Also the Unitarians (despite of being one of the "accepted religions") started to be put under an ever-growing pressure, which culminated after the Habsburg conquest of Transylvania (1691), Also after the Habsburg occupation, the new Austrian masters forced in the middle of the 18th century the Hutterite Anabaptists (who found a safe heaven in 1621 in Transylvania, after the persecution to which they were subjected in the Austrian provinces and Moravia) to convert to Catholicism or to migrate in another country, which finally the Anabaptists did, leaving Transylvania and Hungary for Wallachia, than from there to Russia, and finally in the United States.
In 1993, the UN's human rights committee declared that article 18 of the International Covenant on Civil and Political Rights "protects theistic, non-theistic and atheistic beliefs, as well as the right not to profess any religion or belief." The committee further stated that "the freedom to have or to adopt a religion or belief necessarily entails the freedom to choose a religion or belief, including the right to replace one's current religion or belief with another or to adopt atheistic views." Signatories to the convention are barred from "the use of threat of physical force or penal sanctions to compel believers or non-believers" to recant their beliefs or convert. Despite this, minority religions still are persecuted in many parts of the world.