Well, many blacks fled NY after Catholic rioters during the Civil War attacked blacks. In one infamous incident, a black orphanage was set on fire, its doors were nailed shut and anyone trying to escape out the windows was shot at. By Irish Catholics.
After that, NYC’s black population grew very slowly for decades. And there was no missionary work by Catholics toward blacks. The Freedmen’s Society which operated in the south after the Civil War was mainly made up of abolitionist Protestants (a lot of them Congregationalists); not Catholics. Even during the century of segregation, there was only one black Catholic college in America (St. Xavier in New Orleans) but dozens of black Protestant schools.
What no one has mentioned is that the white Protestant congregations which fled to the suburbs took all their programs with them. To their credit, the dioceses have kept the parish schools open, many mainly minority and with few Catholics, because the Church has an education ministry. This is not true of the Protestant or Jewish religious schools which have lost students.
These Catholic schools should be used more to try to convert families to Catholicism.
I think the good father is trying to prevent more defections from his parish then drive a wedge or fire up the hierarchy. Some aspects of American Catholic history were just swept under the rug.