Brogaard makes a deep dive into the moral psychology of one of our most complex, and vivid emotions. She explores how hatred arises between people and among groups. She also shows how hate, like anger, can sometimes be appropriate and fitting. Other other questions she addresses are, how does hate differ from anger, disgust, fear, and other related emotions? Is fear an essential part of hatred? How does hatred affect what happens inside the brain? How did hate evolve in human history? Is hatred ever morally justified? Can you hate and love at the same time? Can one hate oneself? How do implicit biases trigger hatred of groups?

This accessible, timely, and novel look at an underexplored emotion will employ examples from current events as well as art and literature and popular culture.