Well, the Pope quotes someone from centuries ago that seems to indicate Islam has a streak which seems to advance violence and a lack of tolerance. The reaction of the Islamists around the world is to protest this thought by acting to confirm it. It is obvious these illiterates have no ability to understand and act rationally since they are irrational and deluded losers.
As someone pointed out, it is akin to the situation whereby a white DC bureaucrat used "niggardly" in his speech to describe how seriously he took his responsibilities for the benefits of the taxpayers. Some illiterates misinterpreted that to be the dreaded "N" word. The poor guy apologized again and again for the following weeks, and finally lost his job.