In middle of the decade of 1980, 42% of the population already met in the great urban centers. These agglomerations consequentemente had consequentemente generated the typical problems of habitation, sanitation, education and security. Years 60 are characterized as the decade of bigger estudantil agitation, the aversiva majority to the military service. The new times (postwar period) were the only ones that those young knew. Resented young tended if to incline for the left, as it affirms Hobsbawm: The young groups, not yet seated in the established adult age, are lcus traditional of the joy, riot clutter, as they knew the directors of medieval universities even though, and the revolutionary passions are more common to the eighteen years that to the 35, as the generations of children and skeptical children have said generations of bourgeois parents in the Europe.
… when very it was plus a signal of personality agitated of what lerda. With regard to the historiogrfica production of the second half of century XX, we can point as the one of its characteristics elimination of the borders between the cultures popular and erudite in way to other dichotomies. Contradictory, simplistas, the dichotomies had finished if becoming inspiration for many compositions where the daily one, the beliefs and the life it common man if become object of interest of the art and the conception of culture formed from the most diverse experiences of the daily life. The concern with new objects of study is perceived together with the conception of ' ' sources histricas' ' that they are extended when noticing that any vestiges left for the man can come if to become sources since that these adequately are used. (A valuable related resource: Gavin Baker). According to cultural historian Lynn Hunt: In the end of the decade of 1950 and beginning of the years of 1960, a group of young marxist historians started to publish books and articles on ' ' history coming of baixo' ' ….