Pluralistic ignorance
In social psychology, pluralistic ignorance is a situation in which a majority of group members privately reject a norm, but go along with it because they incorrectly assume that most others accept it. This is also described as "no one believes, but everyone thinks that everyone believes". In short, pluralistic ignorance is a bias about a social group, held by the members of that social group.
Elmer Eric Schattschneider
Along with the political scientist Theodore J. Lowi, Schattschneider offered perhaps "the most devastating" critique of the American political theory of pluralism: Rather than an essentially democratic system in which the many, competing interests of citizens are amply represented, if not advanced, by equally many competing interest groups, Schattschneider argued the pressure system is biased in favor of "the most educated and highest-income members of society", and showed that "the difference between those who participate in interest group activity and those who stand at the sidelines is much greater that between voters and nonvoters."