Guardian: This morning I visited the place de la République, in many ways the beating heart of Paris. Its where people here chose to place their memorial to the victims of the attacks two weeks ago, and there is still a huge crowd, gathered round the central monument in intense, almost ritual silence, taking in the thousands of pictures, candles, flowers and messages left by wellwishers.
Just a few steps away, a different ritual was taking place. Thousands of Parisians, denied by police security concerns...