<sod >(pictured) - just as presidential candidates took part in a TV debate nearby People held their hands up as they walked towards officers close to the scene where a policeman was fatally shot in Paris Police closed off the popular avenue< eod>< sod > (pictured) - just days before the French presidential election  People held their hands up as they walked towards officers close to the scene where a policeman was fatally shot in Paris Police closed off the popular avenue< eod>