Group hatred evolves through stages that begin with animal exclusion instincts

Evidence

We may now attempt a tabulation of the stages in the development of group hatred. The first and simplest is animal hatred—the hatred of the baboon family or the wolf pack for all who do not belong. The second might be called primitive hatred, when animal hatred is reinforced by two new potent forces—communication and memory. Loyalty to the tribe, however defined, and hatred of other tribes are at the very core of identity. — Bernard Lewis, From Babel to Dragomans, 1048

Categorization

• DEFINE: Introduces a taxonomy distinguishing animal hatred from primitive hatred reinforced by communication and memory.