Robert O. Paxton, The Anatomy of Fascism, p. 218:
Fascism may be defined as a form of political behavior marked by obsessive preoccupation with community decline, humiliation, or victimhood and by compensatory cults of unity, energy, and purity, in which a mass-based party of committed nationalist militants, working in uneasy but effective collaboration with traditional elites, abandons democratic liberties and pursues with redemptive violence and without ethical or legal constraints goals of internal cleansing and external expansion.
Paxton's nine "mobilizing passions" of fascism:
-- a sense of overwhelming crisis beyond the reach of any traditional solutions;
-- the primacy of the group, toward which one has duties superior to every right, whether universal or individual, and the subordination of the individual to it;
-- the belief that one's group is a victim, a sentiment which justifies any action, without legal or moral limits, against the group's enemies, both internal and external;
-- dread of the group's decline under the corrosive effect of individualistic liberalism, class conflict, and alien influences;
-- the need for closer integration of a purer community, by consent if possible, or by exclusionary violence if necessary;
-- the need for authority by natural leaders (always male), culminating in a national chief who alone is capable of incarnating the group's destiny;
-- the superiority of the leader's instincts over abstract and universal reason;
-- the beauty of violence and the efficacy of will, when they are devoted to the group's success;
-- the right of the chosen people to dominate others without restraint from any kind of human or divine law, right being decided by the sole criterion of the group's prowess in a Darwinian struggle.