Another part of the dynamics is connected to groups that culturally choose to isolate themselves. This can create barriers which then perpetuate misunderstanding.
A good example are the Jews. Their culture is productive and their religion is peaceful toward others. However, it is also exclusionary in the sense, one has to be part of the tribe for full acceptance. To the outsider, even if you are opened minded toward people, you have to remain on the outside, to some degree. This creates a barrier with respect to a full meeting of the minds and hearts, which can then result in the imagination filling in the blanks. Exclusion creates it own form of segregation reality. This impacts Jews all over the world and even creates friction in their home country.
When I was younger, my home town was composed of loosening pockets of ethnic groups, with each ethnic group dominating a part of the city. As a child, my generation all spoke English, due to our common education and common youthful American culture. Many of the older generations still spoke their native tongues and retained many of their cultural customs. This self segregation, city wide, made it harder for the older generations to blend with each other. There was a level of bias and mistrust.
Our younger generation, by having a common culture and language, became a bridge for each other. As children and friends of each other, you were not a threat to any of the pockets, and would be allowed inside to see the secret handshakes of each others cultures. This broke the ice by opening eyes and doors.
This self segregation affect is occurring, again in the US, because of immigration that is not being followed by assimilation. The Progressive education system teaches each ethnic group in their native languages.This perpetuates pockets of closed culture within the majority culture. Even if you are opened minded, on either side of the barrier, language barriers reinforce systematic unknowns, that can trigger primitive fear and mistrust.
It makes no sense why the Democrats, say they are for acceptance, yet have chose an immigration policy leading to self segregation; ethnic diversity. Ethnic diversity is designed to perpetuate a level of misunderstanding. They then blame majority people, who are shut out, in their own home town. My guess is the goal is to divide people, and then capitalize on the induced fear and mistrust.
Legal and illegal immigration have different impacts in terms of the unconscious fear. Legal immigration requires a long pre-assimilation process, Illegal immigration, can be done on a whim. There is less time for assimilation, while breaking the law to enter the country, can create a sense of guilt, in otherwise honest people.This can compound the need to self segregate. The Democrats encourage segregation and the mistrust this can create. Blaming the majority, for human nature, further helps to divide the majority, from the self segregated.