We understand prejudice as discriminatory, derogatory ideas regarding a subject, a community, a country or social group. The issue of discrimination encompasses individual psyche and social imaginary, since each society is constituted with its values, its concept of justice, logic and aesthetics, so it seems that the inferiority of the Other is the reverse of the affirmation of the truth itself; hence the others are assigned an evil and perverse essence, there is a short distance. Prejudice ruins the quality of human life and there is even the possibility that it has positive facets: it must be studied. This book includes chapters of professionals in psychoanalysis, biology, sociology and laws, who come together to precisely study the phenomenon of prejudice and provide, from their specialty, multiple readings around an alternative