In The Weekly Standard in 2017, writer Andrew Cline said that as a young man, he frequently shared pizza with a liberal friend, even though they “worked on opposite ends of many political issues.”1To befriend someone working against your own political goals may seem unfathomable to many Republicans and Democrats today. That’s because political opponents are no longer mere people with different opinions. They’re the enemy, and they’re evil. At least, that’s what a collection of recent studies and polls reveal about the modern partisan mindset.