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.

Opponents to Trump want their nationwide protests that day to be an even bigger one. Progressive groups including the American Civil Liberties Union, American Federation of Teachers, Planned Parenthood and Sen.

Approximately 5 million turned out against Trump at the "No Kings" protests; turnout for Trump's military parade appeared to be in the thousands.