"This might be a controversial thing to suggest, but in a quest to understand and relate to terrorism or school shootings, sometimes it feels like it's real, the appeal. As we've seen with ISIS, it's not always the devout who are getting into it; it's just people looking for a sense of belonging. The more they feel they're up against, the more intensity the cause has. It's an epic clash of cultures, and both sides are playing that up, but it's human beings disaffected, detached, and lonely."