Charles Mills, the philosopher, who died a couple of years ago, describes very nicely this phenomenon of white ignorance, whereby in a racially divided society like the United States, white people can afford to be ignorant of many aspects of the lives of the black people whom they live alongside. Black people, on the other hand, cannot afford to be ignorant in the same way. The practical stakes of being ignorant in that way could be very high. If you think, for instance, of the experience that young black people can have engaging with police officers, it is really important that they are aware of the risks to them of that process. On the other hand, it is perfectly possible for white people in that society to grow up with an ignorance of the ways in which their fellow people living in the society with them are subject to risks that they do not have to engage with. That phenomenon can expand beyond white ignorance. You can recognize the ways in which there can be gender‑based forms of ignorance, that there can be aspects of women's lives and experience that men, in virtue of enjoying perhaps greater social power, do not have to engage. They can afford to remain ignorant of them. Not only can dominant groups in this situation afford to remain ignorant; actually, it can be positively helpful for them to remain ignorant. It might be helpful because it is more comfortable. It is difficult to acknowledge that other people are having a harder time than you, that perhaps you are benefiting from the ways in which they are having a harder time. Also, it can be strategically important in terms of shaping the direction of resources that you not pay attention to certain things.