A few thoughts on the endlessly shifting dividing lines and rhetoric we are witness to:
 Emile Durkheim, The Division of Labor in Society, New York: Free Press, 1997 . Durkheim later changed his views and conceded the need for even modern societies, with their 'organic' solidarity (as oppose to a mechanical solidarity), to believe in common symbols which would anchor the whole of society.
 The fatwa by Khomeni carried no legal force outside of Iran, and even less for most Muslims in the UK who can be broadly classified as Sunnis. Muslims in the UK did distance themselves considerabley from the fatwa, which was obviously designed to rouse base emotions and passions in Islamic Iran; call it a traditional society binding itself around a religious value.
 Just what are "British values", in light of the hysteria generated by the Rushdie affair, is a question explored by Talal Asad's essay "Multiculturalism and British Identity in the Wake of the Rushdie Affair", In: Genealogies of Religion: Discipline and Power in Christianity and Islam, Baltimore & London: The John Hopkins University Press, 1993, pp. 239-268.