After being hit in the head at FedEx with a beer mug thrown by a Redskins Fan who was aiming at the Eagles fan in the row in front of me, I have to say Giantone make a good point.
Of course, if it had hit my 9 yr old son, I would have wanted to fight the thrower, regardless of the fact that it was a Redskins fan and a woman. (The county police got her out of there quick)
Used to be that games were a time to celebrate and cheer the team and find a sense of community. It's still all that for most people, but now a sizeable number of people go to the games to drink.