The Problem with western civilzation is that we allow Liberal professors like this to get tenure.
I just finished reading Robert Spencers "Politically incorrect guide to Islam and the Crusades. I strongly advise you and your son to get a copy of this book. It will give both of you the facts and hopefully give your son some ammunition the next time the prof says something stupid.
Think Kosovo. Think Belgrade. Think Sarajevo. Think Armenian genocide.
Now think moslem ‘peace’ initiative. And the Jews. And CHristians. People of the Book (Ahl al-Kitab) were never given any kind of tolerance except by paying for it. Remember what that mullah in Britain said.......”It’s OK to kill a Christian like a cow.”
You can also look up some of the more violent suras (some posted here on FR) and suggest your son request an explanation for the meaning. Ordinarily, it’s the suras on the clot or on light that are used in college classes. I speak from personal experience.
Rent el Cid and watch some of the newer movies about Sarajevo.
If the prof gets mad, your son either goes with the flow or risks failing the class.
Read it already, gave it to my son a dinner this evening to see if he can discuss with the prof.