For what sin are they atoning?
The two most educated and intellectual denominational corps of Christian clerics are on the polar opposite sides of a lot of theological disputes: Jesuits and Missouri Synod Lutherans. Therefore, Jesuits know that there is not a single condemnation of slavery as an institution anywhere in the Bible. I would excuse such ignorance from theology lite touchy feely hucksters of the Joel Osteen mold and mammyookem cracker jack box theology degree AME black pimp preachers. Jesuits are supposed to know better.
If the Maryland Jesuits had helped fund Georgetown University with the proceeds from murder contracts, then yeah, I can see the necessity for atonement. And because Jesuits are works-justification, it would make sense for them atone through Earthly works.
Otherwise, this whole exercise is about black people who are fishing for a reason why they should never be held accountable for anything, and their non-black allies who agree with that notion.