The shocking news from Mecca, with the death toll now at 700 and still climbing is appalling and goes to show once again just how dangerous a surging crowd can be. We have had such tragedies at football matches but fortunately they are rare. Sadly Mecca has become a black-spot for this kind of disaster in spite of the fact that the Saudis have spent billions trying to create conditions which will make crowds safe. Clearly more needs to be done, but meanwhile our hearts go out to all those who have suffered injury and loss.