Why multiculturalism doesn't work

To clarify exactly why "multiculturalism" does not now, nor has it ever, worked in those countries, cities, etc., where it has become "policy," in that, simply put, it was not designed nor was it ever intended to ever work in the way you and millions of other young people were told it is/was suppose to, in that:
I. The Mitroikhin Archives, smuggled out of the old Soviet Union by a former KGB General (tens of thousands of secret KGB documents many of which are yet to be translated) repeatedly makes it clear that the entire "civil rights movement" was invented by, paid for and run by the KGB. It's goal was obviously "The Archives" state quite clearly, to create a program that would sufficiently harm the US, their chief adversary at the time, and bring it to it's knees by the simple expedient of manufacturing an unwinnable system where black Americans were sold on the idea that whites had victimized blacks for centuries (an invented history that never happened in any way so described by the Soviet Propaganda) and to uses black violence and, what they thought to be a low grade IQ, to create havoc and to so enrage whites by way of black violence and black (forced, I might add) co-mingling so as to "deliver them [democracy] to our cause."
II. This program was a deliberate plan of attack with specific goals and was, by no means, a spur of the moment plan as you will see once you have read the founding author's outline for a plan of attack, i.e., the original author Israel Cohen, 1915, made the following hypothesis, not actually put into effect until Joseph Stalin was able to solidify his rise to power in the late 1920's, to wit:
"'A Racial Program for the 20th Century'
We must realize that our party's most powerful weapon is racial tensions. By propounding into the consciousness of the dark races that for centuries they have been oppressed by whites, we can mold them to the program of the Communist Party. In America we will aim for subtle victory. While inflaming the Negro minority against the whites, we will endeavor to instill in the whites a guilt complex for their exploitation of the Negroes. We will aid the Negroes to rise in prominence in every walk of life, in the professions and in the world of sports and entertainment. With this prestige, the Negro will be able to intermarry with the whites and begin a process which will deliver America to our cause."
Israel Cohen, A Racial Program for the 20th Century,' 1915.
NB
The left has, for years, argued that the Israel Cohen referred to as the author (who purportedly was a British author, and Communist Philosopher, was not the Israel Cohen who's works now reside in perpetuity at the Humanities Library,
Israel Cohen Library at Stanford University--an argument which distracts, quite effectively, from the central issue which is that the blueprint outlined in the 'A Racial Program for the 20th Century' is, in fact, an exact outline (or a near miraculous prediction if you prefer) of the succeeding actions carried out by the KGB, et al, starting in the late 1920's and which flourished so well and which was so effective beginning in the late 1950's and early 1960's in the US and elsewhere.
In summary, there is no city, state or country where this plan has been in effect that the principles outlined in 'A Racial Program for the 20th Century' cannot be seen in current practice and where young people, the easiest victims with which to inflict this very long term propaganda, where each principle as invented by Israel Cohen in 1915 has not become an unshakable "truth" which it's adherents cling to despite it's shockingly clear faults and which they espouse with Lemming-like virtuosity, i.e., one form or another of "we only have a little racial hatred" and it's pathological blindness to the obvious non sequiturs which come part in parcel with a intentionally fabricated "program" who's actual destructive intent and purpose cannot be denied.
One Final Note:
Despite the multitudinous reasons for failure noted above, there is one further barrier to the success of the non sequitur that is "multiculturalism," i.e., in no case will the minorities to whom the "benefit" of multiculturalism are purportedly intended espouse a willingness to be included in the social structure of the host culture (even the term "host culture" is an oxymoron in that the rejection by the minority community of any "benefit" of that culture negates it's seeming social advantage).