In order to understand state-society relations in Turkey, it is first necessary to understand the relationship between Turkish nationalism and Islam. Although Turkey is a national and secular state, religion lies at the core of its political landscape and identity. Islam has always played an important role in the vernacularization of Turkish nationalism; Turkish nationalists, in turn, have redefined Islam as an integral part of national identity. Turkish nationalism is essentially based on the cosmology of Islam and its conception of community. The patterns of collective action, the meaning of justice, community, legitimacy and organizational networks in Turkey are very much informed by Islamic practices and organizations. Islamic activism has emerged as a result of the expanding market and the changing patterns of religious authority; political liberalization and interaction with Europe. It is, therefore, an attempt to re-imagine and renegotiate the Islamic aspect of Turkish identity.