Social movements can be described most simply as collective attempts to promote or resist change in a society or group. The degree of change advocated and the level at which changes are pursued vary across all types of social movements, whether religious, political, or student. Some movements clamor for sweeping, revolutionary transformations, whereas others pursue specific moderate reforms. The level at which changes are sought varies from global and national alterations of social structures to attitudinal, spiritual, and lifestyle changes.

Types of Movements

Revolutionary movements such as the Bolshevik, Palestinian, Islamic jihad, and Irish Republican movements seek fundamental structural changes. These movements pursue radical changes in a society's basic institutions or, in some cases, major changes in the world order. Because these groups challenge the legitimacy of extant authorities, powerful elites typically use every means, including violence, to repress revolutionary movements.

Reform movements, in contrast, attempt...