This week Marketplace Tech is looking at how an online troll becomes a terrorist, how people are recruited and radicalized online through social media and how companies can deal with it. Host Molly Wood talked with Fathali Moghaddam, a professor of psychology at Georgetown University. In 2005, he published a paper called "The Staircase to Terrorism." It was an exploration of how, out of millions of disgruntled people in the world, a very few rise up this metaphorical staircase and commit violent acts in the real world. He says radicalization isn't new, but the internet can make it faster and easier. The following is an edited transcript of their conversation.
Molly Wood: What are the things that move people, ultimately, to violence?