One can possibly forgive although one should never excuse a university
professor who tells a colleague in a moment of anger to "go back to the
slum where you came from.' But then, Professor Ghevarghese makes an even
more outrageous statement (not the first time, I am told) to the effect
that "Americans have a mission to make Mohammedans human beings..." This is
hate speech of the most racist kind. I am personally offended as are many
of my colleagues. We  don't and should not tolerate it when it is used
against Blacks, Jews or Christians. Why should we tolerate it when it is
used against Muslims?
One wonders if this is an indication of what might go on in the protected
confines of the classroom where captive students are bombarded with such
intemperate and hateful speech. If so, I am afraid we might have to demand
a thorough investigation. No self-respecting academic institution should
tolerate such abuse.