One of the many paradigms of inequality and exclusion is racism, one of the most insidious forms of discrimination. To understand it, many authors focus on the study of the ideas, and frequently adopt an evolutionary perspective that goes from racialism to applied biology. This article takes a different direction. It concentrates on the study of the experiences lived by the colonial agents and the colonized peoples - as well as by the settlers - aiming to understand the feelings interwoven in the very moment of this confrontation. Drawing specifically on the activity of the pangermanists in Africa, particularly in the territory of Namibia, formerly known as German South-West Africa, I intend to establish connections among racial hatred and imperialistic movements that advocated the exclusion of the native peoples from their own territories.