As I walked to the tube this morning I noticed a policeman on Edgeware Road, something I can’t remember having seen before at that time of morning. On the way to the net cafe I saw three more a little further down the street. People at the bank took more interest than usual in the sirens of emergency vehicles going past. I guess people are a little edgy. Someone had written in the Independent this morning that September is a time that many a massacre is remembered around the world, and yet we tend not to hear very much about most of them.