TOPSHOT - French President Emmanuel Macron arrives to deliver a speech during a ceremony at The Prefecture de Police de Paris (Paris Police Headquarters) in Paris on October 8, 2019, held to pay respects to the victims of an attack at the prefecture on October 4, 2019. - Three police officers and an administrative worker -- three men and a woman -- died in the frenzied 30-minute attack at the police headquarters, a stone's throw from the Notre-Dame cathedral in the historic heart of Paris. (Photo by LUDOVIC MARIN / AFP)