It is hard to deny that immigration recalls a scenario of radical opposition. According to a popular common sense, a country that is forced to "endure" the clash with immigration it’s doomed to attend to the of the people as a nation - and then of the democratic citizenship. Immigration, throwing into crisis the supposed homogeneity between citizens living into the same territory, would transform the sources of the cultural unit into latent cases of dispute or open conflict. Therefore, every democratic country has the right to put barriers at the frontiers, in order to avoid that it may become a destabilizing factor for the host society. But which is the stakes in this rhetorical exclusion for our "democratic" societies? The point is that this deal directly with the legitimacy and the boundary of the pluralism of values and political identities.
Keywords: Immigration, exclusion, values, social cohesion, pluralism.