Years ago I coached girls’ basketball in a lower-middle class suburban rust belt school district with no real “ghetto” area.
I had two girls, both mixed-race (Black dad/White mom). They lived about 1/2 mile away from each other. Their skin color was light brown (think Alicia Keys/Halle Berry) and they both had straight hair.
The one who lived with her White mother and White grandparents dressed, talked, and acted “White”, dated White guys, hung mostly with White friends, and was raised as a devout Catholic in my parish at the time.
The one who lived with her married mixed parents dressed, talked, acted, dated, and hung out with non-Whites.
Both were good teammates, worked hard, had good attitudes, and have good jobs and their own families now, but the stark difference in their culture and demeanor growing up despite similar appearance and location was always an interesting contrast.
Unfortunately for the “black-living” girl, one of her two kids went down the wrong path and did time for multiple felonies while his brother got his degree and is a teacher/coach at his HS alma mater.
My four adopted mixed race babies were raised in white communities. Each is successful most are religious 3 out of 4 are married. 4th is picky and the decent women pool is shallow.
That the Catholic Church is by its very name a universal church has resulted in a greater acceptance of mixed race marriages than most Protestant denominations had until about 1980 or so. If you look at the largest mixed race community in America, the Creoles of Louisiana, they are largely a Catholic population. Pentecostals and charismatics were not as prone to supporting racial separation as other Protestants, but their influence and numbers were not significant until after World War II. A combination of Southern resentment of their loss in the Civil War and theories of racial supremacy driven by both bad theology (blacks were marked as inferior because of their descent from Ham) and Nordic supremacy theories promoted by “scientific” racists” combined to have Protestants, especially evangelicals, support segregation and sometimes poor treatment of blacks. It is worthy to note that two supporters of segregation in the 1950s, W.A. Criswell and Jerry Falwwll, renounced their former support in the 1980s.