Bags,
I'll make my point gentler.
It doesn't matter to your story what the woman's ancestry was. It doesn't matter that whether her ancestors emigrated from South America or whether she was Presbyterian or whether she never really got ABBA. When someone telling a car crash story mentions something totally irrelevant and historically divisive like the driver's race, it causes many reasonable minds to question the storyteller's ability to relate the facts accurately, out of fear that perhaps racism has clouded the storyteller's views. And it gets worse, WAY worse, when the storyteller uses a perjorative for that race, like you did here.
When telling a story, you get to choose what facts to include. Choose wisely.
I'll make my point gentler.
It doesn't matter to your story what the woman's ancestry was. It doesn't matter that whether her ancestors emigrated from South America or whether she was Presbyterian or whether she never really got ABBA. When someone telling a car crash story mentions something totally irrelevant and historically divisive like the driver's race, it causes many reasonable minds to question the storyteller's ability to relate the facts accurately, out of fear that perhaps racism has clouded the storyteller's views. And it gets worse, WAY worse, when the storyteller uses a perjorative for that race, like you did here.
When telling a story, you get to choose what facts to include. Choose wisely.