A Mob? Really?

http://www.huffingtonpost.com/2009/08/04/dnc-goes-all-in-takes-on_n_251438.html

So let me get this straight...people expressing their opinion by shouting at town hall meetings are a "mob", but people at the RNC expressing their opinion by shouting as well as trying to *bodily* prevent delegates from making it to the RNC are "protesters." Huh...I haven't yet seen any reports of people at these town hall meetings doing anything but talking (or shouting)... Really? A "mob"? You're serious? I guess I'd better spend some time figuring out what a "mob" really is...