Racism is a social construct because it is a concept that was created and defined by humans, rather than being a natural or inherent aspect of the world. Racism is based on the idea that certain physical characteristics, such as skin color, are associated with certain innate qualities, such as intelligence or morality. However, there is no scientific basis for these associations, and they are instead the result of cultural beliefs and social norms that have been developed over time. As a result, racism is not an objective truth, but rather a subjective belief that is shaped by societal factors such as history, culture, and politics.