Please don't equate Phillies fans with Eagles nutjobs.

Trust me, they are of two ilks.
True enough, the Phils fans have had their share of ugliness over the years, but no more so than other cities (I seem to remember a certain "Death to Disco" night that resulted in a forfeited baseball game due to damage incurred at the field).
And if we are to believe teh interwebs, there have been several battery-throwing incidents, not all of which are attributable to the Philly Phaithphul.
