Because of migration European society has become very diverse,and EU is facing an issue of multiculturalism. Growing number of immigrants does not just have demographic consequences, but also changes social , cultural and religious dynamics.So called battle among representatives of different cultures within one territory deserves our attention.Indeed, immigrants do not come “naked”, they certainly bring with themselves visions of the world,traditions,practices,faiths, values, norms, moral systems etc. And it is vital to notice that they refer to them as essential identity references. As every social human being with a common values, ideologies and faits they turn to this references not just individually , but collectively or as a communities. This phenomenon explains shaping ethnic minorities in France,Germany and other immigrant “friendly” countries. The great idea of EU is to create pro-active community where representatives of different cultural,religious and ethnic backgrounds can coexist together without threatening each others development.Very important issue of religion can not be absent in this context. Islam is often considered the more problematic expression of creating identity and a successful integration .Increasing number of Muslim minorities, lack of integration and practicing sometimes their own traditions keeping them away from a collective sense of belonging.Nevertheless, Multiculturalism as a social phenomenon seems a good idea , imagine a society where different societies have found its way of coexisting and especially respect for diversity. However, the concept might seem a great idea, but as it comes to introducing it to the society it often becomes a way more complicated. And start to seem even utopian. From 19970s to 1990s there was a tendency among western democracies towards increased recognition for diversity, through range of multiculturalism policies and minority rights From 1990s Europe has faced a retreat from multiculturalism and return to the idea of nation building and unitary citizenship.This come back from the utopian idea of multiculturalism could be explained,by the increasing number of islamophobic sentiments and 9/11 and fear that accommodation of diversity went too far.According to Multiculturalisms critics,Europe has allowed immigration without demanding enough integration. Hence, immigrant communities have their own sense of belonging to a group. Idea of nested identity is hardly applicable on them , because they do not feel as European , as the gap between cultures is too big. I think this issue is one one of the most significant ones, because when we talk about disagreements among Europeans whose cultural practices and religion are more less alike, the differences between Muslim communities are bigger and this is challenging a development of collective European identity as, they do not feel a sense of belonging to Europe or national state, but their own community. A community is bound together by its shared values and rules, and if the European community aims at unity and continuity it must completely reconsider its national policies and institutional tools in order to achieve unity and to make immigrants, especially young immigrants who are torn between their home place and the new world they live in, feel they mean something more than a potential economic asset to the “adopting” country. The European identity is first about people and then about economics. And so should the European Union be. At least that’s the ideal plan.