Politics is what happens when members of a society identify problems, determine which ones are most pressing, and debate proposed solutions to those priorities. It’s a messy process that, over time, hopefully leads to progress. But what happens when members of society live in completely different realities, in which the major problems that afflict one half of the population doesn’t exist, much less matter, to the other half? Politics don’t happen at all—and there’s no hope for building a better world. That’s where America is today.

Editorial cartoonists Ted Rall (from the Left) and Scott Stantis (from the Right) disagree on quintessential issues like whether God is real, capitalism or communism is better, and whether Gregorian chants are more listenable than the Dead Kennedys. But they’re best friends, so those disagreements come from  ...