Never easy, the relationship between the vaunted political system and economic order appears to be in crisis. New books by historians and economists sound the alarm.

By Jennifer Szalai

The documentary series “Free to Choose,” which aired on public television in 1980 and was hosted by the libertarian economist Milton Friedman, makes for surreal watching nowadays. Even if Ronald Reagan would go on to win the presidential election later that year, it was still a time when capitalism’s most enthusiastic supporters evidently felt the need to win the public over to a vision of free markets and minimal government. Today’s billionaire donors may be able to funnel money to their favored candidates without even bothering to pay lip service to American democracy, but the corporate funders of “Free to Choose” set out to make their case.

They had an enormous audience: The 15 million viewers who watched the first episode saw an avuncular Friedman (diminutive and smiling), leaning casually against a chair in a Chinatown sweatshop (noisy and crowded), surrounded by women pushing fabric through clattering sewing machines. “They are like my mother,” Friedman said, gesturing at the Asian women in the room. She had worked in a factory too, after immigrating as a 14-year-old from Austria-Hungary in the late 19th century. Friedman explained that these low-wage garment workers weren’t being exploited; they were gaining a foothold in the American land of plenty. The camera then cut to a tray of juicy steaks.