The rise and fall of democracy around the world is nothing new.Democracies such as Poland, Latvia and Lithuania arose in the wake of World War I, only to be crippled by economic turmoil and a retreat to authoritarianism that prompted World War II.“Some of the gravest moral catastrophes of the 20th century, then, are to be found coursing dark and bloody from the ruins of failed democracy,” Thomas B. Ginsburg and …