It is a truly interesting question. Our family is massively mixed- but it is only recently that our eldest daughter and one of our nieces, have become really interested in their ancestry. Others is the family just are not interested, or rather, just do not want to know- don't want to upset their comfortable apple-cart.
They have also become very interested to the concept of 'mixed race' - as our daughters and nieces are all white, but have this beautiful exotic look, and 2 of them very curly hair. One of them was picked on the spot by the Storm agency- as she is so beautiful because of her ancestry.
Aparthheid in South Africa was so so recent- and very much alive when they were born and grew up- so it is so shocking for them to know their own close family went through all of this, their homes and lands taken, their exclusions from so many professions, and so much more.
It certainly makes you think and certainly makes you more empathetic- when you know your won ancestors, over Centuries had to go through all of this, enslavement and having to flee their home. Humility, too.