I see that the trouble which Linfield fans caused in Dublin when they played Shamrock Rovers was reciprocated when rovers came to Belfast last night. It'll be interesting to see if any of the rovers fans arrested end up having Belfast accents. For once, it looks like Linfield fans weren't really involved, although I'm sure neither side were singing hymns.
The reality is that such a fixture is a magnet for anyone who wants a bit of trouble. Surely both clubs could restrict the selling of tickets to those who are club members/season ticket holders that way, at least they have the threat of a ban from the ground and they don't get those just wanting to start trouble.