"The aim is to show solidarity with this colleague," explains Sebastien Greneron, Bouches-du-Rhone departmental secretary of the Alliance union, who is taking part in a rally with around sixty police officers in Marseille in support of the officer who shot Nahel, a 17-year-old whose death in June shocked public opinion. The Nanterre prosecutor has asked that the officer be charged with murder. IMAGES AND SOUNDBITES