"Diversity" has become one of the crusades of liberals, especially academic liberals. But, in a country that is pretty closely divided politically, it is not at all uncommon to find a whole academic department -- sociology, for example -- without a single Republican today or for the past three decades.
Academia is virtually a liberal monopoly but they show no misgivings about the lack of diversity of ideas on campus. It is only physical diversity that arouses the passions of liberals because that engages their attitudes toward particular social groups.
Liberals have often been critical of college fraternities for being exclusive but have seldom been critical of all-black student organizations or even all-black dormitories. Liberals have succeeded in virtually eliminating all-male colleges but applaud the role of women's colleges.
Among liberals' most cherished views of themselves is that they are in favor of promoting the well-being of minorities in general and blacks in particular. But here again, it all depends on which segments of the minority community are involved.
Black welfare recipients or even black criminals have received great amounts of liberal political and journalistic support over the years. However, the great majority of blacks, who are neither criminals nor welfare recipients but are in fact their main victims, have their interests subordinated to the interests of their unsavory neighbors who are more in vogue in liberal circles.
Whatever the merits or demerits of liberal principles, those principles are often far less important than the attitudes which have become the hallmarks of contemporary liberalism.