It is worth pointing out that the Saudis (along with several other muslim states) still purchase and own slaves, who are black.
The Saudi students were therefore deeply offended that a lowly, sub-human negro would dare confront them in their moment of joy, as they celebrated the murders of 6,000 innocent civilain Americans.
Back in Saudi Arabia, these wealthy muslims would have Mr. Kebede as their personal property.
This is a clearest example I have ever seen of the true psychotic and evil nature of contemporary campus political correctness and "hate speech."
"How dare you! Back home you would be whipped and beaten to death for such affrontery!"