Liberal democracy has enjoyed much better days. Vladimir Putin has entrenched authoritarian rule and is firmly in charge of a resurgent Russia. In global influence, China may have surpassed the United States, and Chinese president Xi Jinping is now empowered to remain in office indefinitely. In light of recent turns toward authoritarianism in Turkey, Poland, Hungary, and the Philippines, there is widespread talk of a “democratic recession.” In the United States, President Donald Trump may not be sufficiently committed to constitutional principles of democratic government.

In such a time, we might be tempted to try to learn something from earlier turns toward authoritarianism, particularly the triumphant rise of the Nazis in Germany in the 1930s. The problem is that Nazism was so horrifying and so barbaric that for many people in nations where authoritarianism is now achieving a foothold, it is hard to see parallels between Hitler’s regime and their own governments. Many accounts of the Nazi period depict a barely imaginable series of events, a nation gone mad. That makes it easy to take comfort in the thought that it can’t happen again.

But some depictions of Hitler’s rise are more intimate and personal. They focus less on well-known leaders, significant events, state propaganda, murders, and war, and more on the details of individual lives. They help explain how people can not only participate in dreadful things but also stand by quietly and live fairly ordinary days in the midst of them. They offer lessons for people who now live with genuine horrors, and also for those to whom horrors may never come but who live in nations where democratic practices and norms are under severe pressure.

Milton Mayer’s 1955 classic They Thought They Were Free, recently republished with an afterword by the Cambridge historian Richard J. Evans, was one of the first accounts of ordinary life under Nazism. Dotted with humor and written with an improbably light touch, it provides a jarring contrast with Sebastian Haffner’s devastating, unfinished 1939 memoir, Defying Hitler, which gives a moment-by-moment, you-are-there feeling to Hitler’s rise. (The manuscript was discovered by Haffner’s son after the author’s death and published in 2000 in Germany, where it became an immediate sensation.)* A much broader perspective comes from Konrad Jarausch’s Broken Lives, an effort to reconstruct the experience of Germans across the entire twentieth century. What distinguishes the three books is their sense of intimacy. They do not focus on historic figures making transformative decisions. They explore how ordinary people attempted to navigate their lives under terrible conditions.

Haffner’s real name was Raimund Pretzel. (He used a pseudonym so as not to endanger his family while in exile in England.) He…