Legitimacy, when challenged, bases itself on an appeal to the past, while justification relates to an end that lies in the future. Violence can be justifiable, but it never will be legitimate.
Hannah Arendt (1972). “Crises of the Republic: Lying in Politics; Civil Disobedience; On Violence; Thoughts on Politics and Revolution”, p.161, Houghton Mifflin Harcourt
