From the End of Whiteness, an Atlantic article on the most important cultural-demographic or, to coin a term, chromatico-demographic, shift that's happening in America:
...Whether you describe it as the dawning of a post-racial age or just the end of white America, we're approaching a profound demographic tipping point. According to an August 2008 report by the U.S. Census Bureau, those groups currently categorized as racial minorities—blacks and Hispanics, East Asians and South Asians—will account for a majority of the U.S. population by the year 2042. Among Americans under the age of 18, this shift is projected to take place in 2023, which means that every child born in the United States from here on out will belong to the first post-white generation.
Obviously, steadily ascending rates of interracial marriage complicate this picture, pointing toward what Michael Lind has described as the "beiging" of America. And it's possible that "beige Americans" will self-identify as "white" in sufficient numbers to push the tipping point further into the future than the Census Bureau projects. But even if they do, whiteness will be a label adopted out of convenience and even indifference, rather than aspiration and necessity. For an earlier generation of minorities and immigrants, to be recognized as a "white American," whether you were an Italian or a Pole or a Hungarian, was to enter the mainstream of American life; to be recognized as something else, as the Thind case suggests, was to be permanently excluded. As Bill Imada, head of the IW Group, a prominent Asian American communications and marketing company, puts it: "I think in the 1920s, 1930s, and 1940s, [for] anyone who immigrated, the aspiration was to blend in and be as American as possible so that white America wouldn't be intimidated by them. They wanted to imitate white America as much as possible: learn English, go to church, go to the same schools."
Today, the picture is far more complex. To take the most obvious example, whiteness is no longer a precondition for entry into the highest levels of public office. The son of Indian immigrants doesn't have to become "white" in order to be elected governor of Louisiana. A half-Kenyan, half-Kansan politician can self-identify as black and be elected president of the United States.
As a purely demographic matter, then, the "white America" that Lothrop Stoddard believed in so fervently may cease to exist in 2040, 2050, or 2060, or later still. But where the culture is concerned, it's already all but finished. Instead of the long-standing model of assimilation toward a common center, the culture is being remade in the image of white America's multiethnic, multicolored heirs...
Pop culture today rallies around an ethic of multicultural inclusion that seems to value every identity—except whiteness. "It's become harder for the blond-haired, blue-eyed commercial actor," remarks Rochelle Newman-Carrasco, of the Hispanic marketing firm Enlace. "You read casting notices, and they like to cast people with brown hair because they could be Hispanic. The language of casting notices is pretty shocking because it's so specific: 'Brown hair, brown eyes, could look Hispanic.' Or, as one notice put it: 'Ethnically ambiguous.'"