Answer:
David Snow focused on this set of conguent interests on social movements issues strategies on his most important scholarly achievement which he called "framing perspective"
Explanation:
Snow´s "framing perspective" approach on large, informal groupings of individuals or organizations to negotiate on emergent meanings of social-movement issues, is psychological and centered in agencies services focused on specific action for change.
More than competing perspectives framing perspective is a diagnostic framing to identify the problem to assign of blame; prognostic framing to suggest solutions, strategies, and tactics to a problem and motivational framing to get rationale action to the types of social change, which could be alternative, redemptive, reformative and revolutionary according to David F. Aberle a cultural anthropologist.