What has happened here?

The same as what has happened everywhere else.

People just like you and me have killed themselves and hi-jacked and killed plane loads of people just like you and me, whilst crashing into the heart of two crowded cities, and killing more people just like you and me.

People just like you and me have risked and lost their lives to try and save people just like you and me.

The world is not the same as it was and may never be again.

I don't think anyone is saying that we should not discuss this on the forum, for how could we not?

All that is being requested is that we show a little common sense.