I don't think you get this in any other city in the UK (I may be wrong)
Some Liverpudlians seem almost to revel in death and mourning. I don't if its because its a city with a lot of Irish families in and perhaps they have strongly Catholic/religious/traditional family-orientated roots?
I found it plain weird though, when I lived there. There would be shrines set up at the scene of traffic accidents where someone had died, and they would be maintained for years. It often seemed to be young men who had died and the relatives would hang football tops and scarves all over railings, fences and lampposts. I even saw a pair of boxing gloves once! It's most odd.
If you look at the obituaries in the Liverpool Echo there are as many as 15-20 for the same person. It'll be family, friends, next door neighbours, the guys from the pub, all leaving separate notices.
I think they enjoy all the keening and wailing a little bit to be honest. Its all part of the tradition.
That said, obviously I have every sympathy for the families of those killed at Heysal, or on the roads or whatever else. It's the professional grief I don't get.