I've sat in front of the director's box for 20 years. The only fans we ever have trouble with behind us are Norwich. They were at it today, gobbing off before the game had even started, thinking they were summat because they were sat on a (marginally) padded seat.
Thankfully managed to get a message passed on so a steward was sent to keep an eye on them - they were trying to antagonise all through the first half.
Had to laugh when the penalty got saved. A few people turned round to give some back and a middle-aged woman whose red-faced husband had been trying to provoke something all match gave a shrill "excuse me! Language! There are children present!"
I pointed out that a) no one said anything that their group hadn't said first and b) it was a football match.
Fully expecting we'll all get a letter reminding us about our conduct again

who were we playing the last time we got a letter?
Oh yeah, Norwich.