Answer:
Patrisse meant that the whites are still so racially discriminating to even accept the black people as equal citizens of America and that the presence of these African Americans is a constant reminder of their past generations which, ironically, they felt is painful for them to be reminded of.
Explanation:
The book "When They Call You A Terrorist: A Black Lives Matter Memoir" by Patrisse Khan-Cullors and Asha Bandele revolves around the story of how black people had to endure discrimination and prejudice to survive. The book particularly details the experience of Patrisse and her survival, her act of activism and becoming a voice for the suffering black people.
When Patrisee describes the residents of Sherman Oaks, she labels them as wealthy people who got theirwealth at the expense of her people, i.e, the black people. She also comments how these people do not want to be reminded of what it took to keep their wealth. By this, Patrisse meant to say that these 'wealthy people" knows they got to their current lives only with the help of the blacks/ slaves or slavery system. And that, they do not want to be reminded of the past, even if it meant accepting the fact that they exploited the blacks just for their own gain. This shows that the whites are still so racist and unaccepting, justifying their actions and still refusing to accept openly that the blacks are equal citizens of America just as they are, if not more.