Extremism is a complex phenomenon, although its complexity is often hard to see. Most simply, it can be defined as activities (beliefs, attitudes, feelings, actions, strategies) of a person or group far removed from the ordinary. In conflict settings it manifests as a severe form of conflict engagement. However, the labeling of activities, people, and groups as "extremist," and the defining of what is "ordinary" in any setting is always a subjective and political matter. Extremists are usually contrasted with centrists or moderates. For example, in contemporary discussions in Western countries of Islam or of Islamic political movements, the distinction between extremist and moderate Muslims is typically stressed. Likewise, extremist Christians in countries such as the United States are frequently contrasted with moderate Christians. Political agendas perceived as extremist often include those from the far left or far right, as well as radicalism, reactionism, fundamentalism, and fanaticism.