noun
: a political, religious, or social movement or agitation led by or consisting chiefly of youth or young people and usually aiming at reform or revolution
ready … to join the Nazi youth movements — British Book News
the liberal section of younger Americans, the type out of whom youth movements are made — Nation
basic to all youth movements are a deep dissatisfaction with the existing … order, a desire to change this order — Hans Kohn
— compare youth group