People are becoming increasingly obnoxious in all walks of life. There is, of course, the people ruining your meal/movie/plane ride with their loud cell chatting. There are also people who curse in public or who loiter in the left lane of the highway preventing people from passing. What all these folks have in common is their obliviousness to others.
Yeah, a disregard for others. That's basically it. The f%^&ers. Hold on, I gotta take this call. ;-P