“It should be clear by now that whatever Americans say about diversity, it is not a strength. If it were a strength, Americans would practice it spontaneously. It would not require “diversity management” or anti-discrimination laws. Nor would it require constant reminders of how wonderful it is. It takes no exhortations for us to appreciate things that are truly desirable: indoor plumbing, vacations, modern medicine, friendship, or cheaper gasoline. [W]hen they are free to do so, most people avoid diversity. The scientific evidence suggests why: Human beings appear to have deeply-rooted tribal instincts. They seem to prefer to live in homogeneous communities rather than endure the tension and conflict that arise from differences. If the goal of building a diverse society conflicts with some aspect of our nature, it will be very difficult to achieve. As Horace wrote in the Epistles, “Though you drive Nature out with a pitchfork, she will ever find her way back.” Some intellectuals and bohemians profess to enjoy diversity, but they appear to be a minority. Why do we insist that diversity is a strength when it is not? In the 1950s and 1960s, when segregation was being dismantled, many people believed full integration would be achieved within a generation. At that time, there were few Hispanics or Asians but with a population of blacks and whites, the United States could be described as “diverse.” It seemed vastly more forward-looking to think of this as an advantage to be cultivated rather than a weakness to be endured. Our country also seemed to be embarking on a morally superior course. Human history is the history of warfare—between nations, tribes, and religions —and many Americans believed that reconciliation between blacks and whites would lead to a new era of inclusiveness for all peoples of the world. After the immigration reforms of 1965 opened the United States to large numbers of non- Europeans, our country became more diverse than anyone in the 1950s would have imagined. Diversity often led to conflict, but it would have been a repudiation of the civil rights movement to conclude that diversity was a weakness. Americans are proud of their country and do not like to think it may have made a serious mistake. As examples of ethnic and racial tension continued to accumulate, and as the civil rights vision of effortless integration faded, there were strong ideological and even patriotic reasons to downplay or deny what was happening, or at least to hope that exhortations to “celebrate diversity” would turn what was proving to be a problem into an advantage. To criticize diversity raises the intolerable possibility that the United States has been acting on mistaken assumptions for half a century. To talk glowingly about diversity therefore became a form of cheerleading for America. It even became common to say that diversity was our greatest strength—something that would have astonished any American from the colonial era through the 1950s. There is so much emotional capital invested in the civil-rights-era goals of racial equality and harmony that virtually any critique of its assumptions is intolerable. To point out the obvious— that diversity brings conflict—is to question sacred assumptions about the ultimate insignificance of race. Nations are at their most sensitive and irrational where they are weakest. It is precisely because it is so easy to point out the weaknesses of diversity that any attempt to do so must be countered, not by specifying diversity’s strengths—which no one can do—but with accusations of racism.”