Klein wrote a book a few years ago on the topic of polarization, human's inclination towards clan/tribal thinking, and how it manifests itself in (US) politics:
* https://en.wikipedia.org/wiki/Why_We%27re_Polarized
Klein wrote a book a few years ago on the topic of polarization, human's inclination towards clan/tribal thinking, and how it manifests itself in (US) politics:
* https://en.wikipedia.org/wiki/Why_We%27re_Polarized