This is about power.

Power is often the extent to which you can inconvenience others---to maybe boost the ego or the coffers of one or the other sides.

In this case, in a football stadium, you've got 2 vocal and vehiment sides already in an artificial war stance finding another thing to create a battle over. Fueled by huge testosterone (or estrogen) and adenalin levels, it can get out of hand, people can be harmed both physically and psychically. (i.e. the battle of Jesse and the school board in Illinois now).

I've eliminated any consideration of right or wrong in this polemic. After a certain point, right or wrong goes out the windown anyway.

Sad, but true.

Art