Why do members of a society often have blinders on when it comes to injustice in their midst? Is that kind of blindness a reality that exists in any parts of our society today?

Most of the white people in Jackson, Mississippi seem blind to the injustice of racism and to the daily assaults on the human dignity of the African-Americans in their community, a situation that was historically true. Why do members of a society often have blinders on when it comes to injustice in their midst? Is that kind of blindness a reality that exists in any parts of our society today? What does it take to help people discern injustice “where they live,” as the saying goes?