How about the announcer at an NFL game stating that if there are bad manners in the stands, drunkedness, or fights (we won't mention that some folks bring guns to the games), the game will be suspended and the home team will be fined $1 million and if there are any points on the board for the home team, they will be revoked. Then, and only the, will the game resume.
If you're interested in why I say this, find a sports story about the SF 49er's / Raiders' game at Candlestick Park this last week-end. Ugly times.
Or, look up what happened to a fan after the SF Giants / LA Dogers game earlier this year.
I find it ironic that folks complain and moan about how violent pro hockey games are. I go to 20 - 25 SJ Sharks hockey games every year...and I've yet to see or hear ANYTHING that resembles what's happening at NFL and MLB games.
Oh, wait...once the parking lot at the venue for the Sharks game was strewn with broken beer bottles and other sorts of debris left by slobs. All of that was there because the night before there had been one of those miserable and disgusting caged fights at the arena.
And San Francisco is so much about "peace". Not so much, folks.