WASHINGTON, May 31, 2011—Nearly one in three African-American adults (30%) and four in ten Hispanics (39%) say they are more likely to support a cause or social issue online than offline today—both significantly higher percentages than Caucasians (24%), according to the new Dynamics of Cause Engagement study. Jointly conducted in late 2010 by Georgetown University‘s Center for Social Impact Communication and Ogilvy Public Relations Worldwide, the study examined trends in cause involvement and the roles of a variety....