There is a lot of Hate out there but what causes it?

http://www.scientificamerican.com/article/the-origin-of-hatred/

“If love is said to come from the heart, what about hate? Along with music, religion, irony and a host of other complex concepts, researchers are on the hunt for the neurological underpinnings of hatred. Functional magnetic resonance imaging (fMRI) has begun to reveal how the strong emotion starts to emerge in the brain.”

A neurobiologist named Semi Zeki of University College London’s Laboratory of Neurobiology led a study last year that scanned 17 adult brains as they gazed at the images of a person they claimed to hate. Across the board, areas in the medial frontal gyrus, right putamen, premotor cortex and medial insula activated. Parts of this so-called “hate circuit,”he researchers noted, are also involved in initiating aggressive behavior, but feelings of aggression itself—as well as anger, danger and fear—show different patterns in…