Why We Hate

Cognitive scientist Laurie Santos examines tribalism, asking why love for one group can inspire hate for other groups -- in politics, sports and even warfare -- and how tribal thinking shapes perceptions.

An examination of what drives people to embrace hateful ideas. Extremism expert Sasha Havlicek explores the factors that attract people to ideologies that fuel hate and violence -- from white nationalism to Islamic terrorism.

Neuroscientist Emile Bruneau explores how people can use their capacity for critical thinking, their brain plasticity, and strategies like education and cooperation to help combat hate.