The problem with today's multiculturalism is that it is different than pluralism. Pluralism is the proper ethos for America, multiculturalism is not. The difference can be explained simply by assuming Americans can be divided into two tribes:
Ideological Tribe A
We believe that America is at its best when its mainstream is maintained without regard to race, creed, color, sexual preference, etc..
Ideological Tribe B
We believe that America is at its best when its mainstream is maintained with special regard to race, creed, color, sexual preference, etc.
I could go on at length to describe the nefarious notions that are sustained in the American Culture Wars, begun in the late 50s taking shape in the 60s and blossoming in the 90s, but the distinction above nails it. What's important is that multiculturalism is now clearly showing its philosophical weakness and that ordinary people are recognizing it.
The weakness of multiculturalism is that its advocates simultaneously emphasize the politics of difference as well as notions of equality, and they try to do so without being judgmental. It is a direct consequence of trying to nail down the precise weight of 'special regard'.
Multiculturalists will assert that Americans must pay attention to the history of X in order to properly understand and respect X-Americans. In this they will assert then, that the same is true of Y-Americans. And of course they consequently assert that we make America better, because the general history of America was neglectful and disrespectful of all of the Xs and Ys and now only today with the new multicultural perspective can true equality become reality (but we still have a long way to go), so they say. So multiculturalists will emphasize all these histories and develop a new 'special regard' which can be communicated through the convoluted narrative of respectful terms, aka politically correct language. Along with this pervasive demand of the general public, multiculturalists also demand special programs of 'inclusion' and 'empowerment' of institutions.
Of course X-Americans don't have to do this diligence or sponsor such regimes because they already know, right? Well, not exactly. Multiculturalism requires that its subjects toe the ideological line in expressing the particular history of the narrative of multiculturalism. This is where the whole ball of yarn unravels, because this requirement of 'authenticity' becomes untenable as soon as you get to a particular level of detail and especially if you happen to be some as of yet unclassified hybrid of X & Y. This particular knot is sending shockwaves through the efforts of the ever more stultifying alphabet soup of the LGBT... 'community' as various identity factions attempt to micromanage the weight of special regard for their distinctions.
Multiculturalists are the enemies of conformity and anonymity. They require that people represent their differences, except of course when they are not supposed to. Confusing? Of course it is. Multiculturalists will highlight the great benefits of 'diversity' but then assert that people just 'happen to be X' and contribute equally with everybody else. The only way this can happen is if all parties in the 'diverse' group accept with precision the special regard for the X person. Multiculturalists would be profoundly disappointed were people of X distinction refuse to apply for X scholarships, or if people of Y distinctions did not predictably support multicultural rhetoric 'in solidarity' with Y. They would haughtily say such people were working against their own interests. (Because multiculturalism defines those interests! Just read the history!)
Where the friction of this regime expresses the pain of its logical error is at border conditions. IE, hiring, firing, promoting, demoting, and all other sorts of transactions that move individuals from in-group to out-group status. All rationales for discriminations of any sort must now include politically correct rationales, each appropriate to their 'own' groups.
It goes without saying that the aim of multiculturalists is to sustain this politics of difference and to denormalize the normal to which they have attached the prefix of 'cis-'. The mainstream of America of multicultural dreams has a complete and total ontology of race, gender, creed, color, country of origin, sexual preference and religion, each which contributes to the de-emphasis of America's 'majority'. They have succeeded massively in enabling this narrow and particular set of demographic tags to drive analysis of Americans over all other sets. Things like 'years of education' pale in significance to 'race', for example, when looking at socioeconomic indicators. This is true across all media.
The impact is clear. Multiculturalists seek to maintain their success by enabling 'victims' of every stripe (with a meticulously maintained database of stripes) to raise suspicions about the motives and capabilities of every group they are not a part of, and a general assumptions about cultural and political 'authenticity' that maps properly to their regime of special regard. This makes a trainwreck of evenhandedness, undermines common cause for anything outside of the multiculturalist agenda and establishes a never ending crusade against the true spirit of competition, meritocracy and fair play.
Before multiculturalism collapses under the weight of its accumulated deceptions and Orwellian contradiction, it will drown the ambitions of millions and set up millions more for failure in the world where multiculturalism's narratives and machinations does not exist.