On Saturday, organizers say millions of people participated in "No Kings" protests across the nation. It was organized by a group that was founded in Colorado.

Timothy Snyder, history professor, and author of "On Tyranny" and the "Thinking about..." Substack, talks with Rachel Maddow about the character of the anti-Trump movement and what past opposition movements tell us about how the energy of "No Kings Day" can be channeled into political productivity.