I understand your point. But here is the reality. When I became close friends with someone there, who happened to be black, that man took a lot of grief from the brothers because of his friendship with me. That was wrong.
I had similar experiences in the army a few times when on profile and attached to conventional units while healing up. i didn't have have any problems with the blacks,but a few of the diddy-bopper city blacks seemed to have trouble with me,and thought they could scare or dominate me. It didn't take them long to find out that didn't work,and after that they left me alone.
Oddly enough it was the blacks in SF that had the most trouble,and the trouble they had was with fellow blacks in conventional army units was being friends with their white teammates. Lots of them could cop a serious attitude about a brutha being friends with a honkie. Their mistake. NOBODY is more important than your teammates,and they could have three eyes and a ear on top of their head for all you cared. I was friends with one black SFC that was a member of the KKK. Said he loved taking his membership card out and flashing it in the faces of any whites that tried to give him grief. Said it shut them up instantly because they seemed to become so confused they didn't know what to say. He wasn't a light-skinned black,either. Could have passed for a African. Grew up in Philly,and had been hanging around on teams with rural whites for so long he was a huge country music fan.
He,I,and a white SFC were all friends who had served together before and knew each other were standing around in the Chicago airport in our dress greens waiting to get a connection to the next plane taking us to Ft.Lewis,and then on to VN,when a almost stereotypical "nice old white lady" walked up to us and very politely said "Excuse me,are you Green Berets? SF guys back then hated being called hats,and we might have all had a drink or two,so the same black SFC pointed at his beret,and said "No,mam. This is a Green Beret. I'm a bleep." I laughed so hard I may have cried a little,while me and the white SFC were trying to apologize to the old lady and explain to her he was just drunk and having a little fun,and meant her no harm. Some SF guys had what some people may have called a strange sense of humor. His code name was "Spearchunker".
Maybe because I was from an urban environment – my classmates in high school were black – I never saw friendships between black and white as a problem. I guess I was just trying to understand why things were as they were.
My experience has been the exact opposite. It was always the city black and city whites that I saw having racial problems. Rural blacks and whites all grew up being neighbors to each other for generations,and helping each other was a daily event. They might not have gone to the same schools or churches,but they were friends and neighbors none the less.