evidence: But this is a challenging time to do that. Because there is so much uncertainty in the world right now, because things are changing so fast, there is a temptation to forge identities, tribal identities that give you a sense of certainty, a buffer against change. And that's something that our young people -- we have to fight against. Whether you're talking about Africa, or the Middle East, or Northern Ireland, or Burma, the forces that lead to the most violence and the most injustice typically spring out of people saying, I want to feel important by dividing the world into "us" and "them." And "them" threatens me, and so I’ve got to make sure that my tribe strikes out first. And fighting that mentality and that impulse requires us to begin very young, with our kids. One of the most encouraging things I’ve seen in Northern Ireland is children starting to go to school together and having a sense that we're all in this together, as opposed to it’s "us" against "them."