The definition of identity has undergone major transformations through history given the nature of the concept itself that depends who defined, and therefore, of cultural dynamics in which it is immersed. In this context, an exploration of the historical variation of the concept is proposed. The transformation undergone a 'porous' identity pre-modern, with the untying and subjectification of self, resulting in a 'shielding' that marks the coordinates of the modern identity. This identity, which is configured from the interiority, and this acquitted of the influence of external forces, it stands as a modern myth. However, own fragmentation of late modernity, offers new porosities that redefine the very identity. Therefore, the modern myth of the shielding is questioned when considering new cultural dynamics as the claims of minorities, the media or rock, that challenge the idea of modern, authentic and exclusive identity.