“Here’s a quick overview of what happens when groups of passionate believers start to define themselves in opposition to others: A simple message seems obvious to a large population, and those people can’t understand what the opposition could possibly be thinking. They never or almost never engage with someone who holds those different beliefs, and if they do, it’s in the context of the discussion, not in the context of, like, also being a human. The vast majority of those people nod appreciatively and then change the channel and watch NCIS and eat the tacos that they made. It’s their own recipe. They’ve developed it over years, and they like it better than any taco you could get at even a super fancy restaurant. They go to bed at 10: 30 and worry a bit about whether their son is adjusting well to college. A very small percentage get really riled up. They’re angry, but they’re mostly worried or even scared and want to cause some kind of action. They call their representatives and do a little organizing. They’re usually motivated not just by agreement in the message but by a hatred of the people trying to fight the message. A tiny percentage of that percentage just go way the fuck overboard. They get so frightened and angry that they need to make something happen. How? Well, that’s simple, right? You eliminate the people who are actively trying to destroy the world. If we’re all really unlucky, and if there are enough of them, those people find each other and they confirm and exacerbate their own extremism.”