That's why I mentioned the common sense/common courtesy, for when legalities seem to give both sides of an argument an edge. These kinds of technicalities can end up hurting more than helping—the problem is that people tend to disagree on which cases are the helpful ones and which are the hurtful ones.

Thankfully, I find myself doubting that this policy will really be used very often. I'd like to trust that the majority of people aren't that scared of the Quran, that breast cancer research would solicit more sympathy than disgust, and that looking up the proper way to use a specific kind of gun so as to avoid accident and injury could be seen as responsible—and that the people at the library in charge of these decisions would keep these points in mind. 

Sorry if this comes off as rambling—I'm not used to a character limit and I'm happy to have a sophisticated discussion. And, for the record, the '<i>' and the '</i>' above was me hoping these comments used HTML format. No such luck :)