In 1940, after the surrender of France to Germany, Henriot became active as a journalist working for the French government headed by Philippe Pétain which had removed to Vichy. In December 1943 he was appointed Secretary of State for Information. During his career he created programs and broadcast through Radio Paris, becoming the government's spokesman. He developed a war of propaganda against the Free French Forces and the BBC; whose spokesmen were Pierre Dac and Maurice Schumann. Seeking to shape the perceptions of the French government and German occupation, and to destroy popular support for the Résistance, Henriot was given the nickname of the "French Goebbels". He broadcast twice daily on Radio-Vichy, "repeatedly and eloquently attacking all those he considered lukewarm in their attitude to collaboration and calling on all good Catholics to support the German cause in the fight against communism." He continued the propaganda programmes after the Germans were forced, due to the new Allied presence in North Africa, to extend their military occupation in 1942 over Southern France, formerly the Free Zone controlled by the French government at Vichy. He warned the French people about any association with the Allies or "terrorists" and countered the arguments of the Free French Forces broadcasting from the BBC. He wrote and delivered 270 broadcasts on Radio Vichy in a "mesmerising rhetoric and delivery"... as a "huge media star", according to one source. "There is no doubt Henriot's broadcasts were influential, attracting a large and diverse audience." It was said that "Henriot is listened to by everyone, enemies or supporters. Families shift their meal times so as not to miss him. There is no-one left in the street at the time he speaks." On 6 January 1944, Henriot was appointed as the French Minister of Information and Propaganda. In 1943, Henriot joined the paramilitary Milice "with a deep-seated conviction that Christian civilisation was engaged in a life and death struggle against Bolshevism."
Assassination
Henriot was a natural target for the Résistance and on 28 June 1944, in the Ministry building where he lived, he was assassinated by a group of COMAC members of the Maquis, an organisation designated by the French government at Vichy as "terrorists". Disguised as members of the Milice, they had persuaded him to open his door. In retaliation, the Milice assassinated Georges Mandel, a strong opponent of collaboration. Henriot was afforded a state funeral in Paris, presided over by Cardinal Suhard in Notre Dame Cathedral. His coffin was placed, surrounded by French flags and flowers, in front of the Hôtel de Ville, where thousands filed past to mourn him – less than two months before the Liberation of Paris.