Well, another question could be why do sport fans all over the world act like morons soon as they enter the stadium? As for the NBA incident I think Stern is totally wrong, the message he sent to all fans is this, "I is every GOOD fans duty, to throw objects, hurl obscenities and do whatever you can to provoke the rival team into fighting with you so they get suspended for the season."
The Indiana Pacers are now screwed for the whole season, they were going to be a contender for the championship this year and now they don't have a chance without Artest, O'Neill, and Jackson... So if your a true NBA fan remember your duty, wait for your rival team to come to your home court, get good seats and prepare to be a moron, and get into a fight.. because that is now your duty, as a fan...
Well, at least nobody pays them millions of dollars to act like morons. I personally haven't watched an NBA games since the millionaire morons began smashing backboards, hanging from hoops like apes, thumping their chests and behaving like bohemian teenagers on drugs.
It may very well be they were morons before they entered.