Tuesday is Equal Pay Day—so dubbed by the National Committee for Pay Equity, which represents feminist groups including the National Organization for Women, Feminist Majority, the National Council of Women's Organizations and others. The day falls on April 12 because, according to feminist logic, women have to work that far into a calendar year before they earn what men already earned the year before.

In years past, feminist leaders marked the occasion by rallying outside the U.S. Capitol to decry the pernicious wage gap and call for government action to address systematic discrimination against women. This year will be relatively quiet. Perhaps feminists feel awkward protesting a liberal-dominated government—or perhaps they know that the recent economic downturn has exposed as ridiculous their claims that our economy is ruled by a sexist patriarchy.

The unemployment rate is consistently higher among men than among women. The Bureau of Labor Statistics reports that 9.3% of men over the age of 16 are currently out of work. The figure for women is 8.3%. Unemployment fell for both sexes over the past year, but labor force participation (the percentage of working age people employed) also dropped. The participation rate fell more among men (to 70.4% today from 71.4% in March 2010) than women (to 58.3% from 58.8%). That means much of the improvement in unemployment numbers comes from discouraged workers—particularly male ones—giving up their job searches entirely.

Yet if you can accept that the job choices of men and women lead to different unemployment rates, then you shouldn't be surprised by other differences—like differences in average pay.