Sorry to ask, but what all is "a storm"? I assume it's some sort of vandalism, going from what you're talking about with them disrespecting the memory of the chief custodian.
Regardless, I don't think I've seen you so worked up before, so this must be some pretty big s***... I'm sorry to hear it happened, Poe.
It's when spectators rush the field following a victory by their team. Visiting fans generally don't do it because it isn't considered sporting and is (usually) made impractical by the small number of opposing fans in attendance.