Extremism is any ideology or political act far outside the perceived political center of a society; or otherwise claimed to violate common moral standards.^{[citation needed]} In democratic societies, individuals or groups that advocate the replacement of democracy with an authoritarian regime are usually considered to be extremists, in authoritarian societies the opposite typically applies.

Extremism is usually contrasted with moderation, and extremists with moderates. (For example, in contemporary discussions in Western countries of Islam, or of Islamic political movements, it is common for there to be a heavy stress on the distinction between extremist and moderate Muslims. It is also not uncommon to necessarily define distinctions regarding extremist Christians as opposed to moderate Christians, as in countries such as the United States).

Political agendas perceived as extremist often include those from the far left or far right as well as fundamentalism or fanaticism.

The term extremism is almost invariably used pejoratively, however the term may also sometimes be associated with person(s) who have different view(s) which is not consistent with the existing norm(s). It need not necessarily imply that the person is a threat to the society or the government or any other agency, but the underlying fact is that there is a totally new and unique perception of the person about life, politics or any other agenda.

Anthony Charles Lynton Blair (born 6 May 1953) is a British Labour Party politician who served as the Prime Minister of the United Kingdom from 2 May 1997 to 27 June 2007. He was the Member of Parliament (MP) for Sedgefield from 1983 to 2007 and Leader of the Labour Party from 1994 to 2007. He resigned from all of these positions in June 2007.

Blair was elected Leader of the Labour Party in the leadership election of July 1994, following the sudden death of his predecessor, John Smith. Under his leadership, the party used the phrases "New Labour" and "New Socialism" to define its policy, and moved away from its support of state socialism since the 1960s and created a new version of the ethical socialism that was last pursued by Clement Attlee. Critics of Blair claim that "New Labour" did not adhere to socialism as claimed, and that it effectively advocated capitalism. Blair subsequently led Labour to a landslide victory in the 1997 general election. At 43 years old, he became the youngest Prime Minister since Lord Liverpool in 1812. In the first years of the New Labour government, Blair's government implemented a number of 1997 manifesto pledges, introducing the minimum wage, Human Rights Act and Freedom of Information Act, and carrying out devolution, establishing the Scottish Parliament, the National Assembly for Wales, and the Northern Ireland Assembly.

Hamza Yusuf Hanson is an American Islamic scholar, and (with Zaid Shakir and Hatem Bazian) is co-founder of Zaytuna College in Berkeley, California, United States. He is a convert to Islam, and is one of the signatories of A Common Word Between Us and You, an open letter by Islamic scholars to Christian leaders, calling for peace and understanding. He has described the 9/11 attacks as "an act of 'mass murder, pure and simple'". Condemning the attacks, he has also stated "Islam was hijacked ... on that plane as an innocent victim".The Guardian newspaper in the United Kingdom reported that he "is arguably the west's most influential Islamic scholar" and added that "many Muslims find his views hard to stomach."

Hamza Yusuf was born to two academics in Washington State and raised in Northern California. In 1977, he became Muslim and subsequently traveled to the Muslim world and studied for ten years in the United Arab Emirates, Saudi Arabia, as well as North and West Africa. Hamza Yusuf spent four years studying in the United Arab Emirates and elsewhere in the Middle East. Later he traveled to West Africa and studied in Mauritania, Medina, Algeria, and Morocco under such scholars as Murabit al Haaj; Baya bin Salik, head of the Islamic court in Al-'Ain, United Arab Emirates; Muhammad Shaybani, Mufti of Abu Dhabi; Hamad al-Wali; and Muhammad al-Fatrati of Al Azhar University in Cairo, Egypt.^{[citation needed]} After more than a decade abroad, he returned to the United States and earned degrees in nursing from Imperial Valley College and religious studies at San José State University.^{[citation needed]}