In contrast to Jules Archer who took Mussolini's early socialism at face value in Famous Young Rebels (KR, 1973), Mangione enumerates the many inconsistencies that made fellow radicals suspect him of opportunism. Otherwise this useful, if narrowly focused, account zeros in on the Fascists' plans for the march on Rome and some of the immediate causes for the vacuum of leadership that made Prime Minister Facta shrink from the possibility of arresting Mussolini (""How could we possibly. . . ?"") and King Victor Emmanuel opt for an ""amiable compromise."" Good single issue reportage -- with news photos and a brief guide to the standard adult biographies.