Ruth Ben-Ghiat is a historian and commentator on authoritarianism and propaganda. She is a professor of history and Italian studies at New York University, the recipient of Guggenheim, Fulbright and other fellowships and an adviser to Protect Democracy. She is a regular contributor to MSNBC, CNN and other media outlets. She publishes Lucid, a newsletter about threats to democracy. Her latest book, “Strongmen: Mussolini to the Present” (2020), looks at how illiberal leaders use propaganda, corruption, violence and machismo and how they can be defeated.