“History can familiarize, and it can warn. In the late nineteenth century, just as in the late twentieth century, the expansion of global trade generated expectations of progress. In the early twentieth century, as in the early twenty-first, these hopes were challenged by new visions of mass politics in which a leader or a party claimed to directly represent the will of the people. European democracies collapsed into right-wing authoritarianism and fascism in the 1920s and '30s. The communist Soviet Union, established in 1922, extended its model into Europe in the 1940s. The European history of the twentieth century shows us that societies can break, democracies can fall, ethics can collapse, and ordinary men can find themselves standing over death pits with guns in their hands. It would serve us well today to understand why.”