Reading their forum it seems they campaigned for away fans to be moved up there and since they have been moved this isn't the first time things have been thrown.
I can believe some of idiot fans behaving like that but saying police and stewards ignored it makes me wonder. Are they really going to ignore people chucking bottles and flares?
That's more like it. Like the Sunderland fan who made out like he was going to leap over the barriers and have a go. Obviously thought someone would stop him and they didn't so he just walked off!