Acrimony and hyperpartisanship have seeped into every part of the political process. Congress is deadlocked and its approval ratings are at record lows. America’s two main political parties have given up their traditions of compromise, endangering our very system of constitutional democracy. And one of these parties has taken on the role of insurgent outlier; the Republicans have become ideologically extreme, scornful of compromise, and ardently opposed to the established social and economic policy regime.