In January 2017, in the middle of a blizzard, 50 people crammed into a Yonkers, NY living-room to launch NYCD16-Indivisible, one of thousands of similar groups born at the same moment across the US.On Saturday, December 12th, as part of the annual RootsCamp conference, I had the pleasure of convening a conversation about movement organizing in the Trump years focused on the experience of Indivisible, one of the biggest examples of grassroots Democratic activism that arose after the 2016 election, and one where the potential and challenges of building a national, decentralized movement with vibrant chapters in blue, purple and red districts have played out in vivid and important ways. What follows is the edited transcript of our hour-long panel discussion — an...