TRIBE UBER ALLES:

Today, the Lewises argue, "Left" and "Right" are competing bundles of unconnected and sometimes incompatible issue commitments held together by tribalism. The authors bring to bear a wealth of social science research that shows that people's issue commitments are more heavily influenced by group loyalties than by philosophical consistency. They also catalogue a history of various political stances that, for example, began as Right, then were considered Left, and sometimes back again, depending on the  the coalitions' needs. Trade protectionism, for example, was "Right;" then "Left;" now "Right" again (or maybe "Right" and "Left"). Foreign interventionism took the reverse course. Today what counts as "Right" and "Left" has become conflated with party, and party with the views of individual leaders. All of this, the Lewises contend, cuts strongly against the "essentialist" concept of ideology and in favor of their "social theory."

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