This is a really powerful photograph. Unlike so many of the close up reportage recorded on that day, this urban scene serves to show how everyone in the city – at any distance – was deeply affected by the events. The sense of despair on the woman’s face, so perfectly caught in this ‘decisive moment’, says it all. Even the ‘One Way’ sign has ironic undertones. This is (in my opinion) a truly great street photograph which any of the great iconic street photographers we revere would be proud to have taken.