"religious activities"? Really? I'm not privy to that particular religious practice. I mean I've been to more than a few churches, but never seen people run through a banner before.
It's part of life - that's all. If you don't appreciate it, that's up to you. No one is forcing you to go to the game, no one is going to boo you if you're not a Christian. Would you be so upset if they held up a banner reading "BUY A CHEVY?" Stop having a cow.
Time for a reality check people.
"Arm yourself, arm a friend!"