See for yourself how different world experiences produce different perspectives on human behavior:
Isaac Asimov: "Violence is the last refuge of the incompetent." [Foundation]
(He has also written an essay on this, roughly proposing that violence is inefficent at solving problems and often ineffective. Which is a wild thing to say for someone who was an adult during the mid 20th century.)
Hannah Arendt: "Violence is an expression of impotence." [On Violence]
Rollo May: "It is important to see that the violence is the end result of repressed anger and rage, combined with constant fear based on the patient's powerlessness. Behind the psuedo-power of the madness we can often find a person struggling for some sense of significance, some way of making a difference and establishing some self-esteem." [Power and Innocence]
Frantz Fanon: "The development of violence among the colonized people will be proportionate to the violence exercised by the threatened colonial regime." [Concerning Violence]