From The Prospect:
Since 1947, Americans at all points on the economic spectrum had become a little better off with each passing year. The economy’s rising tide, as President John F. Kennedy had famously said, was lifting all boats. Productivity had risen by 97 percent in the preceding quarter-century, and median wages had risen by 95 percent. As economist John Kenneth Galbraith noted in The Affluent Society, this newly middle-class nation had become more egalitarian. The poorest fifth had seen their incomes increase by 42 percent since the end of the war, while the wealthiest fifth had seen their incomes rise by just 8 percent. Economists have dubbed the period the “Great Compression.”
This egalitarianism, of course, was severely circumscribed. African Americans had only recently won civil equality, and economic equality remained a distant dream. Women entered the workforce in record numbers during the early 1970s to find a profoundly discriminatory labor market. A new generation of workers rebelled at the regimentation of factory life, staging strikes across the Midwest to slow down and humanize the assembly line. But no one could deny that Americans in 1974 lived lives of greater comfort and security than they had a quarter-century earlier. During that time, median family income more than doubled.
Then, it all stopped.