Frantz Fanon said this quote

Because it is a systematic negation of the other person and a furious determination to deny the other person all attributes of humanity, colonialism forces the people it dominates to ask themselves the question constantly: In reality, who am I? The defensive attitudes created by this violent bringing together of the colonised man and the colonial system form themselves into a structures which then reveals the colonised personality. This 'sensitivity' is easily understood if we simply study and are alive to the number and depth of the injuries inflicted upon a native during a single day spent amidst the colonial regime. It must in any case be remembered that a colonised people is not only simply a dominated people. Under the German occupation the French remained men; under the French occupation, the Germans remained men. In Algeria there is not simply the domination but the decision to the letter not to occupy anything more than the sum total of the land.