My cousin and I got into a fight during the cardinals game a few years ago... The guy two rows back started throwing things at him during the game. He took it for a minute but when he went and got the usher they wouldn't do anything. So when he was walking back to his seat the guy got into his face.... And then the fight was on...
After the game when i was leaving the stadium. Another guy walked up to me shoved his finger in my face and said, "THE BILLS DIDN'T CIRCLE $H!# TODAY" although he was right he had no business touching me. I am glad a cop seen him do it because when I punched him he lost his front tooth. Then he went to jail and not me.
Fans can get stupid. I usually go to one game a year either in Buffalo or on the road. The only other place I have had a problem is San Diego...