Why Do Culture Wars Happen? | Michael Morris

Why do we instinctively form groups, follow leaders, and defend traditions—even when it hurts us? This week, Michael Morris joins the Behavioral Grooves crew to unpack the deep evolutionary instincts behind our cultural behaviors. In his latest book, Tribal, Michael introduces the peer, hero, and ancestor instincts—three distinct adaptations that shaped everything from early human survival to modern leadership, cooperation, and conflict.

We dig into how these instincts show up in today’s organizations and social movements, with powerful case studies of change (both successful and disastrous) at GM and Reddit. We explore what happens when change is led by an insider versus an outsider, and how that small shift can trigger vastly different outcomes. Michael also explains why top-down reform so often fails—and what it really takes to move culture forward without trampling its most sacred values.

One of our favorite moments? Busting a myth we didn’t even realize was a myth: the origin of Thanksgiving. Far from a colonial tradition, it turns out the holiday was strategically crafted by Abraham Lincoln to unite a fractured nation. It’s a vivid reminder that culture isn’t static—it’s something we co-create to make meaning, foster belonging, and navigate change. Michael’s insights offer a roadmap for becoming more adaptive, inclusive, and effective—both as individuals and leaders. So what are you waiting for? Gather your tribe and press play.

Want to watch this episode? Check it out on our YouTube Channel