police in France on 6 January entitled, "The Struggle Against Racism and Antisemitism—demonstrations and public reaction—performances by Mr. Dieudonné M’Bala M’Bala". With respect to freedom of speech in France and banning scheduled performances ahead of time, Valls wrote: "The struggle against racism and antisemitism is an essential concern of government and demands vigorous action." He takes note of the liberty of expression in France, but goes on to say that in exceptional circumstances, the police are invested with the power to prohibit an event if its intent is to prevent "a grave disturbance of public order" and cites the 1933 law supporting this. Within hours, Bordeaux became the first French city to ban Dieudonné when mayor Alain Juppé canceled a local appearance planned as part of a scheduled national tour, followed closely by Nantes, Tours, Orléans, Toulouse, Limoges, and Biarritz. The show in Switzerland was to go on as scheduled. On 10 January the Paris Prefect of Police prohibited Dieudonné from staging his next three upcoming shows at his Paris theatre. Some officials from both sides of the political spectrum have reservations about the legal validity of the Valls circular, and believe that cancellations could leave their cities liable for judgments of millions of euros in damages to Dieudonné if he sues and wins, as actually occurred in La Rochelle in 2012. According to a poll by IFOP for Metronews taken on 8–9 January 2014, 71% of the French population had a negative image of Dieudonné while 16% held a positive view. The voters of the National Front were the least negative, with 54% seeing him negatively and 32% positively. On 11 January 2014, he announced he would not perform his show Le Mur but would replace it with another one, Asus Zoa, that he wrote in three nights and that would talk about "dance and music inspired by ancestral myths". In February, Dieudonné was banned from entry in the United Kingdom. In September, French authorities opened an investigation into Dieudonné on grounds that he condoned terrorism after mocking and showing footage of the killing of U.S. journalist James Foley. He described it as "access to civilisation", comparing it to many colonial crimes in Africa, which included killing and dismembering of victims and which were for decades justified by "civilizing Africa". 2015 On 10 January 2015, following the Charlie Hebdo shooting, the Porte de Vincennes siege of a kosher supermarket,