JL;DR SUMMARY In the book "American Affective Polarization in Comparative Perspective," authors Noam Gidron, James Adams, and Will Horne analyze the shift in American political culture from civil disagreements to intense emotional partisanship, which they argue is more dangerous than routine ideological differences. A way out west there was a fella, fella I want to tell you about, fella by the name of Jeff Lebowski.