In countries that hold equality is important, clustering occurs
between groups because of polarizing factors such as religion,
wealth or ethnocentrism. Clustering is often considered an
enriching part of free cultures in which one can visit a
Chinatown or a French quarter for restaurant choices. Other
sociologists assert that clustering of like minded individuals
leads to political polarity and intolerance of contrary
opinions, as the United States has allegedly been trending since
the 1950s. - Bill Bishop, Robert G. Cushing, The Big Sort: Why
the Clustering of Like-Minded America Is Tearing Us Apart
(Houghton Mifflin Harcourt, 2009) http://books.google.com/books?
id=nLNVd8ZkW0UC&source=gbs_navlinks_s ISBN 0-547-23772-3, ISBN
978-0-547-23772-5 See also  A portion of the proceeds from
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