Let's start with fact one: An ISU fan assaulting a member of Iowa's marching band--absent reasonable self defense--is unacceptable. I don't care if the fan was provoked by the band as a whole or an individual band member.
Fact two: Iowa's band leadership showed gross negligence/incompetence, bordering on recklessness. They exited through the wrong gate, at a time when Jack Trice was still emptying. They led the band at a course and speed that plowed directly into ISU fans leaving the stadium. And on top of all of that, they ordered the band to play in that environment, rather than having them focusing on marching and safety.
Fact three: Iowa's band members did exactly what they should have done and what they were trained to do. They followed instructions and stayed in rank. If you were not in the ISUCF"V"MB (or, for you Hawk fans on the message boards, Iowa's band), you have absolutely no idea how terrifying it is to march through the opponent's fans after the Iowa-Iowa State game. Breaking ranks only further exposes individual members to assault, harassment, theft, etc. Anyone trying to blame individual band members for staying in rank and following orders is just blind to reality.
That video shows a complete clusterfuck. But if an ISU fan assaulted a member of Iowa's marching band, and wasn't acting in reasonable self-defense, I want them expelled/banned/arrested.