ACLI in Milan from 1962 to 1967 experienced a gradual change in identity and activity from the 1950s. A process in which individual militants and individual local sections discuss certain issues: the effects of industrialization on local systems; the mission of Christian workers within the conciliar Church; the relationship with other Catholic associations and finally with the DC. The confrontation of the ‘base' of the ACLI brings out the first ‘ripples' that will have consequences in the subsequent season of Sixty-Eight and unfolds with a role of orientation and representation exercised by the leading groups that brings out, however, an increasingly pronounced differentiation between exponents and with respect to the aclista history of the ‘glorious' 1950s.