<p>America's political system isn't broken. The truth is scarier: it's working exactly as designed.</p><p>In Why We're Polarized, Ezra Klein reveals the structural and psychological forces behind America's deep political divisions, revealing how a system filled with rational, functional parts can combine into a dysfunctional whole. Neither a polemic nor a lament, this book offers a clear framework for understanding everything from Trump's rise to the Democratic Party's leftward shift to the poli...