If you check out Michelle Malkin's site you will find pictures of the Islamic protests involving the Pope. The sheer hate they represent is astounding. Many people do not realise that in Islam the Koran is the actual letter by letter word of Allah. The original Koran is in heaven. Muhammed is the prophet that Allah used to bring forth his word (the Koran). Since this is the actual word of God and his prophet, anything or anyone that makes a derogatory statement about them must be killed. Unfortunately there is not much middle ground here.
The backlash on the Pope's statement then is not unexpected. What is surprising is that he has not actually apologised. I am afraid this will not end for a while.