oh i totally agree that even at this point in history we are still living with what Bell Hooks and others have called the White Supremacist Colonialist Capitalistic Heterosexual Patriarchy.
we live in this global world that is dominated by white, straight businessmen. be it the business of politics, entertainment, what have you; our reality is under an umbrella of these structural forces that we must live with or in reaction to.
we see this throughout all aspects of modern society. The influence that emerging markets like the Asian Markets and previously the Central and South American markets has over the central structure seems to be infinitesimal.
So it's easy to see why it's so hard for people who don't neatly fit into the mold are struggling against the odds.
That being said, i believe in polyculturalism. that it's important to honor our heritage and histories, but that those identities don't exist in a vacuum. they overlap. i am asian and male and american and gay/bisexual and educated and raised in a rural and poor area in an upper middle class family. all of these identities (and the attendant cultures/sub-cultures) exist within me and aren't easily separated. moreover, it's naive to think they are distinct.
european americans, african americans, native americans, latin americans, and eventually asian americans are all creating the culture together, aspects seep from one population to another.
the classic metaphor is the salad bowl versus the melting pot - multiculturalism is portrayed as a salad bowl - in that cultures are static and remain so even when tossed in with other cultures. that they are immutable.
whereas - some argue (myself included) that in reality humanity is more fluid, more malleable.
Namaste