The urgent need for the study of exclusive identities in conflict is ever more apparent in a globalizing world in which societies are becoming multicultural and complex and in which inter-cultural contact and the co-existence of languages and cultures comes increasingly to bear on the construction of plural identities. The present book considers perversion in the construction of identity and the perverse usage of identity in areas such as social cohesion xenophobia, racism, ostracism, rejection, ageism, marginalisation and the mismanagement of linguistic identity, language groups and associated discriminatory practise arising out of historical and culturally based discrimination. The texts were submitted in an international meeting held in the Institute for Identities and Societies of the University on Lleida (Catalonia, Spain) in November 2012.