This matches my experience. I was once at a supermarket checkout with a black girl I was friends with at the time, when she picked up that the black woman behind us was being disrespectful to us, asking us to hurry up. I tried to calm the situation and get between them, but despite my best efforts a fight broke out between them that knocked over a supermarket display and continued into the parking lot, as me and my friends continued to try to stop them. One of the friends trying to break them up was a black man, though he noped out of there pretty quick once the police arrived, saying he didn't need another strike on his record. The girl ended up with an eye injury. They tried to sue each other but it went nowhere. I talked to her about it in the car on the way home, asking what possessed her to do that. "I had to defend my honor" is what she said.

She clearly had a bad family life, where she was seen as a runt and her sister was treated as a princess. I wished there was something I could do to help, but when she hooked up with a "bad boy" who trashed my storage unit, I kinda decided that associating with her was negatively impacting my life too much.

I know a lot of other black people who aren't all about defending their honor, but this was a pretty striking memory. It's not a good way to be.