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Social movements are sustained collective efforts to promote or resist social change, distinguished from collective behavior by their organization, duration, and strategic orientation. Resource mobilization theory argues that movements succeed or fail based on their ability to marshal organizational, financial, and human resources. Political process theory emphasizes the role of political opportunity structures—openings in the political system that make mobilization feasible. Framing theory (Snow and Benford) shows how movements construct interpretive frames to define grievances, attribute blame, and motivate participation. Contemporary 'new social movements' around identity, recognition, and lifestyle have supplemented class-based movements in post-industrial societies.
Compare two movements with similar grievances but different outcomes (e.g., labor movements in different countries, civil rights versus Black Power) and apply resource mobilization, political opportunity, and framing analyses to explain the divergence. Studying movement strategy documents and recruiting materials reveals framing work in practice.
Social movements are not outbursts — they are organized, sustained campaigns. This is the first thing to understand coming from the study of collective behavior: a riot is an episode; a movement has a lifecycle, a strategy, and internal divisions about that strategy. The civil rights movement, the labor movement, the environmental movement — each involved years of deliberate organizing, internal debates, and strategic decisions about tactics and framing. Three theoretical frameworks have been developed to explain why movements emerge when they do, what makes them succeed, and why participants join.
Resource mobilization theory (developed by McCarthy and Zald in the 1970s) made a deliberately cold-blooded argument: grievances are cheap and abundant; what is scarce is the organizational capacity to act on them. Every society has plenty of people with legitimate complaints. What determines whether a movement forms is whether those people can be organized — whether there is funding, a leadership structure, communication networks, and legal support. This framework deliberately rejects the idea that movements emerge when conditions become intolerable; conditions may be intolerable for decades before someone builds the infrastructure to do something about it.
Political process theory (McAdam) adds a structural complement: even well-resourced movements need political opportunity to succeed. Openings occur when ruling elites are divided, when allies gain positions in government, when international pressure creates space for domestic challengers, or when a crisis weakens the usual opponents of change. The timing of major civil rights victories in the U.S. — concentrated in the mid-1960s — is partly explained by Cold War pressures that made racial segregation an international embarrassment, creating political opportunity that an earlier generation of organizers could not access.
Framing theory insists that none of this works unless people understand their situation as unjust and remediable. Snow and Benford showed that movements actively construct frames: they define a problem (diagnostic framing), propose a solution (prognostic framing), and motivate action (motivational framing). The same objective conditions can produce passivity or revolt depending on how they are interpreted. This is why movements invest so heavily in rhetoric, media, and cultural production — they are doing the cognitive work of making collective action seem both necessary and possible.
Finally, "new social movements" scholars (Touraine, Melucci) argued that post-1960s movements in Western societies differ from older labor movements in an important way: they are organized around identity, recognition, and lifestyle rather than material redistribution. LGBTQ+ movements, feminist movements, and environmental movements seek cultural change and recognition as much as policy change. This matters for measurement: a movement organized around identity recognition may have succeeded even if no legislation passed, because its goal was to change how a group is perceived and how its members see themselves.
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