From their groundbreaking 2017 book, How Democracies Die.
“Political scientists Steven Levitsky and Daniel Ziblatt look at countries threatened by potential strongmen or anti-democratic movements. They found the nations that successfully resisted such movements – like Finland and Belgium during the Great Depression – had leaders who united despite their opposing views because they thought the long-term goal of democracy trumped their short-term self-interest. Countries where would-be opponents stayed silent for reasons of self-preservation, they found, slid into dictatorship.”
Stowe Boyd