Jean-Paul Sartre said this quote

“ How come he cannot recognize his own cruelty now turned against him? How come he can't see his own savagery as a colonist in the savagery of these oppressed peasants who have absorbed it through every pore and for which they can find no cure? The answer is simple: this arrogant individual, whose power of authority and fear of losing it has gone to his head, has difficulty remembering he was once a man; he thinks he is a whip or a gun; he is convinced that the domestication of the inferior races is obtained by governing their reflexes. He disregards the human memory, the indelible reminders; and then, above all, there is this that perhaps he never know: we only become what we are by radically negating deep down what others have done to us. ”