You just shouldn't have to go to the library and listen to the death metal "music" coming from the headphones of the punk-ass flunky next to you and be the one to say turn it down. Where is the Library Nazi?
Of course, I don't know that he is a punk-ass flunky. He may very well be a local doctor just back from a foreign land and while there, got a host of institutional tattoos and just hasn't had time to pick up another BMW before dropping by the library to play Internet poker.
I'm trying to be nice.