No one concerned with history and politics can remain unaware of the enormous role violence has always played in human affairs; and it is at first glance rather surprising that violence has so seldom been singled out for special consideration. This shows to what extent violence and its arbitrary nature were taken for granted and therefore neglected; no one questions or examines what is obvious to all. Whoever looked for some kind of sense in the records of the past was almost bound to look upon violence as a marginal phenomenon.