On paper, law professor Samar Ali and public affairs strategist Clint Brewer seem to come from very different — and perhaps opposing — backgrounds. But their friendship shows why political polarization in the US isn't as intractable as we might think. In an enlightening conversation, they talk about how to address deepening divides in the US and around the globe — and show the value in discarding the "scare script" by which we demonize others. (This conversation is hosted by TED curator Cloe Shasha Brooks.)