Thank the financial crisis for today’s partisan politics

A Bernie Sanders supporter and a Donald Trump supporter fight each other in a "Rock 'em Sock 'em" game
The historian Joseph J. Ellis describes the early days of the United States as “a decade-long shouting match” characterized by “shrill, accusatory rhetoric, flamboyant displays of ideological intransigence, intense personal rivalry, and hyperbolic claims of imminent catastrophe.”