Arinze has either been applauded or excoriated for this speech - but not excoriated as much as he might have been if he was white, I think. Put Bruskewicz or maybe Egan in this situation and given the same speech in the same school, I think the outcry would have been much larger.
It's sad that this speech has to be characterized as "hard hitting" when it's unremarkable, orthodox, Catholic doctrine.