Centrality has to do with how essential the beliefs, values, and ideas associated with movement frames are to the lives of the targets of mobilization. Research on values and beliefs indicates that they are typically arrayed in a hierarchy (Rokeach 1973, Williams 1970).Hypothetically, the more central or salient the espoused beliefs, ideas, and values of a movement to the targets of mobilization, the greater the probability of their mobilization. Sherkat & Ellison's (1997) examination of conservative Protestant's organized opposition to pornography provides indirect support for this proposition. And although the literature lacks a direct test of the relative importance of this variable to successful mobilization, a few studies appear to confirm it