"Diversity + Proximity = War" is the great Heartiste 21st century slogan that encapsulates tribal warfare. One out though, which the American 20th century experiment proved was, it is possible to build a pan euro society. You know who ruined this with Marxist education, media and immigration, but an American identity was built across very different groups from inside and outside the hajnal line. The secret: are the men but especially are the women of comparable beauty.
Diversity will create winners and losers per the strengths and weaknesses of the disparate groups. Skills, abilities, physical traits are distributed differently among groups. Research shows even blind men prefer women with a lower waist to hip ratio. Nature is hardwired, and even the greatest propaganda machine in the history of the world has a hard time getting people to change their preferences (in action, not how they answer an opinion survey). Losers, and being part of the group that is disadvantaged, will create resentment, envy and anger.
There is no greater anger than being rejected sexually and for marriage. Cruise the internet, and you will find bitter men and women of different groups that lose out in the mating market. I chuckle considering how my wife saw Eliot Rodger's picture and thought he was a cute guy, but when she found out his height, knew why he was rejected by women. Living in a nation where the average height was well above his, Rodger was a mating market loser. He also went on an incel rage killing spree. Go even deeper and check out Tumblr for the odd stirrings of segregated dating. Black women are constantly advocating this, but even holy progressive whites are considering interracial dating as a kind of theft from groups (yes, it is comical). Side note: black women are so angry that white women are proud to have booties that they are saying white women are evolving as black women set the standard. Some white women always did, but they never knew it was okay to be proud of it until the media pushed J.Lo.
One must look beyond the Tumblrite talking points about beauty. The collage above is a fun collection of the composite faces from each nation per Facebook pictures. This is not simply skin tone. The disproportionate mating success issue is not skin tone but body shape and the facial bone structure. When non-white crybabies whine about white ideals of beauty, they are trying to make it about color and not about the underlying bone structure, hair and body shape.
Do we need to even discuss average BMIs, the waist to hip ratios of groups, hair? Look at the skulls below. The true trick to European facial beauty is the inverted pyramid of the nasal bridge and jaw. The soft jawline is the key to the feminine look, but the inverted pyramid gives the face a three dimensional look that the human eye finds desirable. No amount of Halle Berrys and Toni Braxtons, who still had facial plastic surgery, paraded on television is going to change the street level daily interactions of millions of people.
Peace also took decades for all, more than a century with the Irish, by breaking the mannerbunds of different American ethnic enclaves. There had to be crack downs on mafias, organized crime, etc. in combination with the spotlighting of the good of the Anglo system of law and order. It took decades to convince other groups to buy into it, but there had to be a carrot and stick approach. A carrot was that the economic system allowed for those not as cognitively blessed to prosper via manual labor or simply homesteading. One of America's greatest secret spices for success was always having new area to explore, fill and claim.
The carrot and stick also had help in that Anglos, Germans, Italians, Irish, Scandis and other Euro descended populations could feel that the mating market had parity. The American mutt could come into being because the overlap between groups was so great. Even media use of Madonna was a way of approving and saying "yes ethnic whites are just as good as the Anglo-Nordic ideal of beauty". If the women of each group in the melting pot has some comparable level of beauty and has strengths another group doesn't have and likewise the men of each group finds them all desirable, you can have peace.
Diversity + Proximity = War but not in all cases.