If a zoo has a visiting tiger exhibit and the tigers break out and eat visitors, the tigers have to be put down (or at least removed). But the culpability doesn't end there. The people responsible for securing the tigers also have to answer for their negligence. (If you don't like the animals example, make it a prison break that leads to rape and murder -- the rapists and murderers are the main culprits, but the wardens and officials that allowed the escape to occur must also answer.) The Pacers' nut cases were the main culprits. But the reason stadiums and professional teams have security is to prevent these situations (or at least prevent the full-scale snow-balling escalation that occured). The Pistons failed here. They're culpable for that failure. I dont know if you can blame the Pistons for not anticipating that 2 players would jump into the stands and start punching everyone in their way. Causing a frenzy. It's not just not a very likely scenario to occur. They provide enough security as they are legally required to, and they can probably train their security for what to do if players go into the stands, but it just doesn't come up often. It's like spending money for a bear patrol where there is rarely ever bears that come into the neighborhood. You can have regular policemen handle any bear related situations that come up but do you need to raise taxes to have a specialized bear patrol? I think CCP and I have been clear that the Pistons couldn't have expected or prevented Artest or Jackson from entering the stands. However, I think they could have prevented that fan from being in the arena (or at least kept an eye on him). Most importantly, I am certain that they could have, and should have, been able to secure the court area, prevent fans from going onto the court, and escorted the remaining players into the lockerrooms. Security exists as much for the stuff that happens after an incident as it does to prevent the actual incident. I think it was the perfect storm of crazy. Detroit fans and Indiana players. Not much could have been done. But, maybe that's just me.