In the discussion of immigration and multiculturalism many people seem to forget, that every society and culture is created and upheld by certain kind of people.
European culture and modern western society is created by white people.
One could see in Africa societies and cultures created by black people, if there were no railroads, airplanes, streets with asphalt, stone houses, electricity, telephone, television, etc.
People of Middle-East have created culture of desert-living tribes, that is so called islamic culture.
People of East-Asia, mostly Japanese and Chinese, created in their times an society, where standard of living and technical ability was centuries higher than in Europe.
Collectivistic, authoric way of thinking, typical for Asians, lead however to stagnation, because of which for example America and Africa were conquered by Europeans, not by Japanese or Chinese.
Rationalism and individualism is typical for European way of thinking and a necessary result of these is support of private property and free market-economy. For this reason industrial revolution happened in Europe and not in Asia.
Asians can live in a European society, because they have no problems to live by its rules. In their own societies Asians don't want to implement values of European enlightenment philosophy, because they really see no use for them.
Asians think, that for example freedom of speech, freedom of religion, freedom of association and gathering and free elections are unnecessary nonsense. Idolatry of leaders as absolutist auctorities, support of official ideology of state without critic and persecution of dissidents are normal, self-evident and necessary things for Asian people.
Robberies, rapes, nepotism, corruption, clan-warfare, superstition and murders committed by momentary impulse are normal things for African people. If Africans form majority in some country outside of Africa, this country transforms to Africa. This has happened for example in Haiti, where voodoo-culture and society torn by bolshevistic anarchy strangely reminds us of African culture and society.
In the USA and Canada Negroes behave in somewhat acceptable way only, when they are clearly in minority. Surrounding white society, on the other hand with machinery of violence (police, prisons, armed self-defence, KKK-style vigilantes), on the other hand by social and cultural pressure, forces Negroes to adapt to western culture.
White Americans are of course Europeans, so society dominated by them is a European society in America.
Correspondingly black Americans are Africans living in America, so areas dominated by them are African islands in the sea of European white society.
Areas with negro-majority of course would differ more of white areas, if they were independent city-states. Because they belong to the United States, there is the same law in force than in other places in the United States as well. It is, as if the surrounding white society would occupy these negro-enclaves by upkeeping at least some what the laws of white people also within negro-ghettoes. Negroes themselves wouldn't have created those laws and they wouldn't try to upkeep them.
Negroes obey laws regulated by white society only, when they are concretedly upkept with harsh discipline. If discipline softens, Negroes african biological character of people is manifested in their behaviour.
Even a lion can obey man in circus, when it is kept in hard discipline by whip. If man stops upkeeping hard discipline with lion, lion starts jumping on mans face.
Biology is a destiny. Living creatures can't do anything for their biology. Every opposition of sociology and biology, for example feminism, is based on attempt to refute mans character as a biological being.
Human is however animal, homo sapiens. Man hasn't been created as a picture of any god. There is no gods and nobody has created human.
Human is biological matter modified by genes, which obey certain biological rules. Like a man needs certain kind of food to stay alive, there are certain rules related to aggressivity, sexuality and intelligence in mans actions.
An army created by 100 000 men is stronger than army created by 100 000 women, ceteris paribus. Male population of Finland does more rapes than female population of Finland. Intelligence level of population of 500 million white people is higher than in population of 500 million whites and 100 million Negroes.
Bringing Negroes to Europe lowers the mean intelligence level of European population, because Negroes have lower median-IQ than whites. There is a positive correlation between intelligence and standard of living. Causality goes in both directions: On the one hand increase in standard of living increases intelligence level by decreasing for example brain-damages caused by malnutrition in population, on the other hand more intelligent population can create higher standard of living for them. When the mean intelligence level decreases, the standard of living of the country decreases. Stupid people can't upkeep high standard of living, because standard of living is the same as the real value of sum of all production of items and services per capita; stupid people can upkeep as valuable total production of commodities as intelligent people, so a more stupid society has a lower standard of living. So bringing Negroes to Europe would lower the standard of living in Europe, even if Negroes wouldn't be social bums living on taxpayers money.
In addition to this Negroes nowadays are mostly unemployed or other parasites living on European taxpayers money. When more bums living on taxpayers money come to Europe, there is less tax money. The more Negroes come to Europe, the less there can be afforded to public health care, education, pensions, childcare, etc. in Europe.
Negroes commit more crimes than white people. When more Negroes are brought to Europe, crime increases. This is not any picture of future, but a realised scenario. In Finland immigrants do more then over 20 times more rapes per capita than Finnish people. The more there is immigrants from Africa and Middle-East in Europe, the more there is crime in Europe. If all non-white people nowadays living in Europe would move back to their countries of origin, crime rate would decrease several tens of percents in Europe.