Wilfred Reilly is a political science professor at an HBCU. He writes at Tablet the following insight.
Within my field—the academic social sciences—a 2006 survey found that about 18% of all faculty members identified as Marxists, another 24% as radicals, and 20%-21% as activists. In contrast, perhaps 5% of American soft-scientists are conservatives. In an environment this politically slanted, the odds are good that many shifts of focus attributed to new theory or empirical data—and indeed many overall social science conclusions—are largely the products of ideology.
Reilly‘s more general point is captured in the title, “How Political Bias Explains Everything.” He makes a good argument. Hat tip to RealClearPolitics for the link.