The science behind ‘us vs. them’ | Dan Shapiro, Robert Sapolsky

 We are hard wired to see our group as good and the other group as bad. If we want to stop wars and promote harmony, we need a rethink. 

You will never win an argument with a anti-vaxxer or climate change denier, as being a valid member of their group is more important than any facts, or even the survival of the planet.