It’s also worth noting that Nigerians are the most educated and most successful demographic in America. Why has this systemic racism not affected them?
In fact, I've found significant evidence to show that this is not the case. In fact, the most educated demographic in America are Asian Americans, by a significant margin -- to all others, including whites. African-born immigrants are far more educated than American-born blacks, but they still lag behind both Asians and Whites (though just a shade behind native-born whites).
Nigerian Americans are listed as 56th, with an average annual household income of $68,658, just a shade over the American Median of $63,179, and significantly below 55 other ethnic groups, including (but not limited to, because I'm not going to list all 55) Korean Americans, Polish Americans, and South African Americans.
I have a handful of Nigerian friends, and they are certainly more educated and more industrious than the average American. But as a group, the evidence shows they are not "the most
educated and successful."