“Hate” has become another all-purpose term of opprobrium, like “Nazi.” If you oppose someone for any reason, you are a “hater.” If you disapprove of some idea or practice, you “hate” the people who hold that idea or follow that practice. If you speak out about it, you may get accused of “hate-speech.” And yet, despite the inflation of the word’s meaning, there is such a thing as “hatred,” and we would do well to understand the emotion.
I came across a discussion of the psychology of hatred and how it is different from other negative emotions. Amanda Ripley sees it as facet of what is called “high conflict,” along with fear and anger. But whereas fear and anger can have positive effects, the same cannot be said of hatred.