I think the pastor is a d-bag xenophobe who is obviously condemning an entire religion because of a small minority of radical fruitcakes. It's radical vs. radical at this point and he happens to live in a country that protects his right to be an outlandish ahole.
P.S. I wonder if he realizes that Christianity has a long history of crazy radicals too. Tim Mcveigh, The Inquisition and the Crusades no more represent Christianity as AL Queda or 911 represents all Muslims.