Hyper-sensitive Muslims around the world, enraged by the Pope's quotation which associated Islam with violence, reacted with, you guessed it........violence!
I paraphrased this account from Christopher Hitchens over at Slate...
Ratzinger quoted from the 14th-century Byzantine Emperor Manuel II. This potentate supposedly once engaged in debate—the precise time and place is unknown—with an unnamed Persian. The subject was Christianity and Islam. The Byzantine asks the Persian to "show me just what Mohammed brought that was new, and there you will find things only evil and inhuman, such as his command to spread by the sword the faith he preached."
The Pope then editorialized thusly "to convince a reasonable soul, one does not need a strong arm, or weapons of any kind, or any other means of threatening a person with death."
So the purveyors of the religion of peace don't appreciate the insinuation by the Pope that Islam is a religion which, as practiced by millions of radicals around the world, advocates the violent conversion or subjugation of infidels. So to prove to the world that they are peace-loving, happy-go-lucky, pacifists, they murder a nun, and attack Christian churches in Gaza.
This is a repeat of the idiotic cartoon fiasco from a year ago. These radicals are peering in every nook and cranny for something to spark their rage. When will the world stop playing patty-cake with the terrorists and apologizing every time somebody says something that irritates them? Who cares what irritates them? They want to kill us whether or not they're irritated. Sadly, it's going to take another successful attack in this country to focus the minds of the appeasers on the Left, on the fact that this is a war between civilizations, and not a problem solved by throwing tax dollars, or dialogue, or appeasment, or diplomacy at it. This is a problem best solved by throwing ordinance, and lots of it.