This is the dream I had last night:

I was having lunch with some people (the sort of blurred face, nameless people who sometimes inhabit dreams) at a restaurant.  I sat down at the table with these people, and was shocked to realize that the back wall of the  second-story restaurant was all glass, and looked out over a field that was the front line of a war.

You could see bunkers and trenches, and as I watched several soldiers on both sides were shot and killed in a flurry of exchanged bullets.

I gasped for breath and tried to scream, and looked desperately at the three people sitting at the table with me – but they were happily chatting together and eating their meals, totally oblivious to the war and death happening just outside the window.  Not one other person in the dining room noticed the war, or cared that soldiers were dying right in front of them as they dined.  I tried to scream again.

And then I woke up.