How does hate work? One answer is that the poor person (or the Jew, or the Asian, or the Native American, or whoever) becomes, intellectually, linguistically, and emotionally, a lessperson, and then a nonperson.
For example, Benveniste discusses the connection of first- and second-person pronouns with the speech situation, and even goes as far as to claim that the third person is a nonperson, since the referents of third-person pronouns are not speech-act participants.