Irreligion in the context of "Religious persecution"

Religion in Hungary is varied, with Christianity being the largest religion. In the national census of 2022, 42.5% of the population identified themselves as Christians, of whom 29.2% were adherents of Catholicism (27.5% following the Roman Rite, and 1.7% the Greek Rite), 9.8% of Calvinism, 1.8% of Lutheranism, 0.2% of Eastern Orthodox Christianity, and 1.5% of other Christian denominations. 1.3% of the population identified themselves as adherents of other religions; minorities practising Judaism, Islam, Buddhism, Hinduism, the Baháʼí Faith, Taoism, Hungarian Neopaganism and other Neopaganisms, and New Age, are present in the country. At the same time, 40.1% of the population did not answer, not identifying their beliefs or non-beliefs, while 16.1% identified themselves as not religious.

Religion in Bulgaria has been dominated by Christianity since its adoption as the state religion in 864. The dominant form of the religion is Eastern Orthodox Christianity within the fold of the Bulgarian Orthodox Church. During the Ottoman rule of the Balkans, Islam spread to the territories of Bulgaria, and it remains a significant minority today. The Catholic Church has roots in the country since the Middle Ages, and Protestantism arrived in the 19th century; both of them remain very small minorities. Today, a significant part of the Bulgarians are not religious, or believers who do not identify with any specific religion, and Bulgaria has been the cradle of some new religions, notably the Neo-Theosophical movement of Dunovism.

Religion in Slovakia is predominantly Christianity, adhered to by about 68.8% of the population in 2021.

The Catholic Church is the major Christian tradition in the country, followed in 2021 by 59.8% of the population, a majority of whom (55.8%) were of the Latin Church and a minority of whom (4%) were of the Slovak Greek Catholic Church. About 9% of the population were mostly followers of Protestantism, and a minority of Eastern Orthodox Church and other Christian denominations; the major groupings are the Evangelical Church of the Augsburg Confession in Slovakia (5.3%), the Reformed Christian Church in Slovakia (1.6%), the Orthodox Church of the Czech Lands and Slovakia (0.9%), the Jehovah's Witnesses (0.3%), and other smaller Christian denominations (0.9%). In 2021, about 23.8% of the population declared themselves not religious, an increase from 13.4% in 2011. An additional 1.2% of the population were followers of other religions or beliefs; small religious minorities in Slovakia include Buddhism, modern Paganism, Islam, Judaism, Jediism, Hinduism

Christianity is the largest religion in Luxembourg, with significant minorities of non-religious people and adherents of other faiths.

Religion in Switzerland is predominantly Christianity. According to the national survey of the Swiss Federal Statistical Office, in 2023, Christians accounted for 56% of the resident population (aged fifteen years and older), of whom 30.7% were Catholics, 19.5% were Swiss Protestants, and 5.8% were followers of other Christian denominations (about half Orthodox and half other Protestants). The proportion of Christians has declined significantly since 1980, when they constituted about 94% of the population; during the same timespan, unaffiliated Swiss residents have grown from about 4% to 31% of the population, and people professing non-Christian religions have grown from about 1% to 7.2% of the population. In 2020, according to church registers, 35.2% of the resident population were registered members of the country's Catholic Church, while 23.3% were registered members of the Protestant Church of Switzerland.

Christianity is the largest religion in the United Kingdom. Results of the 2021 Census for England and Wales showed that Christianity is the largest religion (though it makes up less than half of the population at 46.2%), followed by the non-religious (37.2%), Islam (6.5%), Hinduism (1.7%), Sikhism (0.9%), Buddhism (0.5%), Judaism (0.5%), and others (0.6%). Among Christians, Anglicanism is the most common denomination, with 53% of Christian believers in the UK identifying with this denomination as of 2023, followed by Catholicism, Presbyterianism, Methodism, Unitarianism, and Baptists. Results for the 2022 census in Scotland indicated that the majority (51%) had no religion, but that 38.8% of the Scottish population identified as Christian (of which 20% identified with the Church of Scotland and 13% with the Catholic Church). In Northern Ireland, Christianity is the largest religion (79.7%) followed by non-religious (17.4%), other religions (1.3%), and not stated (1.5%), as of 2021.

A secular state is an idea pertaining to secularity, whereby a state is or purports to be officially neutral in matters of religion, supporting neither religion nor irreligion. A secular state claims to treat all its citizens equally regardless of religion, and claims to avoid preferential treatment for a citizen based on their religious beliefs, affiliation or lack of either over those with other profiles.

Although secular states have no state religion, the absence of an established state religion does not mean that a state is completely secular or egalitarian. For example, some states that describe themselves as secular have religious references in their national anthems and flags, laws that benefit one religion or another, or are members of the Organisation of Islamic Cooperation and of the International Religious Freedom or Belief Alliance.

Sociology of religion is the study of the beliefs, practices and organizational forms of religion using the tools and methods of the discipline of sociology. This objective investigation may include the use both of quantitative methods (surveys, polls, demographic and census analysis) and of qualitative approaches (such as participant observation, interviewing, and analysis of archival, historical and documentary materials).

Modern sociology as an academic discipline began with the analysis of religion in Émile Durkheim's 1897 study of suicide rates among Catholic and Protestant populations, a foundational work of social research which served to distinguish sociology from other disciplines, such as psychology. The works of Karl Marx (1818–1883) and Max Weber (1864–1920) emphasized the relationship between religion and the economic or social structure of society. Contemporary debates have centered on issues such as secularization, civil religion, and the cohesiveness of religion in the context of globalization and multiculturalism. Contemporary sociology of religion may also encompass the sociology of irreligion (for instance, in the analysis of secular-humanist belief systems).

Religious discrimination is treating a person or group differently because of the particular religion they align with or were born into (hereditary). This includes instances when adherents of different religions, denominations or non-religions are treated unequally due to their particular beliefs, either by the law or in institutional settings, such as employment or housing.

Religious discrimination or bias is related to religious persecution, the most extreme forms of which would include instances in which people have been executed for beliefs that have been perceived to be heretical. Laws that only carry light punishments are described as mild forms of religious persecution or religious discrimination. In recent years, terms such as religism and religionism have also been used, but "religious discrimination" remains the more widely used term.