Back a zillion years ago, I worked campus security while attending college, and we were required to provide crowd control at football games together with and under the direction of the campus police.
Without knowing any more details than what’s known here, it looks like a clusterfuck.
There should be someone in charge with a plan, and that plan needs to have a cutoff time for bands. It’s so much easier to go up and tap the shoulder on the director and say, we agreed to end the battle of the bands at 9:00, it’s 9:10 now, can you wrap it up after this song?
Even back in my time, there were “badge heavy” cops and guards. There are better ways of getting people to do things and worse ways.
example
At our games, the families and friends of the players were allowed on the field to wait for the players to come out after the game. But, the tricky part was that we had to wait for approval to let them on the field, and the person in charge could wait until the stands had thinned out a certain amount.
Security was posted at the gate and would need to get people to wait until approval given.
There was one badge heavy security guard who would get into screaming matches with the friends and families F&F and even physic pushing matching keeping the gate closed while frustrated F&F couldn’t understand why this ass was keeping them from doing something they had done for years.
A much smarter guard handled it much better. He would stand well back from the gate and wait for the first group to come. As they approached the gate, he would let them know that they were waiting for the OK, and as soon as he got it, everyone could then go in.
This group then became the new gatekeepers. As other people would come the first group then let them know what the situation was and everyone was fine. Once approval was given, all the F&F went in and there were no arguments or fights.
Unfortunately, it’s the civilians who get tazed and taken to jail after bad confrontations.