Well, apparently we are global now....but even so, local news does mean more to us. America has the 'special friendship', so of course we will remember things more than say, something that happens in Tokyo/China/Africa. We were there with America on the day, we felt their pain, and we have joined them in wars since, in the name of 9/11. So we remember it because it has such an impact on our recent history. Rowanda was horrendous, and is remembered - but it didn't have the same effect on us (the UK) as 9/11 did.
Eg1 - if, in the UK now, you have the misfortune to be on board a hijacked plane, you are highly likely to be shot out of the sky, rather than let the hijackers crash into a building of their choice. Before, you may have been allowed to land at a particular airport. Eg2. our armed forces in the UK and Afghan wars. Eg3. 7/7 attacks - as a result of us being in said wars, and in alliance with the US. The 9/11 attacks changed the world forever - never again will we be so complacent (I hope).
I remember many disasters that I followed on the news - Beslan , 7mths pregnant with ds2, I still think about the horror of it now. I still where I was when my mum told me about Aberfan (way too young to actually remember it happening.) I also remember that the Madrid bombing happened exactly 2.5yrs after 9/11 on March 11th 2004 - it was gloated about by al quaeda at the time as an anniversary attack.
So, 9/11 - the biggest loss of life from a single terrorist attack ever . On American soil, in the most audacious, horrific way. It has changed the word far more than any other terrorist attack and is rightly remembered by us - but I doubt places like, say, Tokyo has the 'wall to wall' anniversary programs (sic) that we do.
It's not just about the lost of life (although that was huge) it is also about the impact on us and the world.
Bemybebe - I saw a whole program dedicated to Rick Rescorla - a true hero.