Duval's case was appealed to the highest court in France, but the appeal was rejected. The President of the Republic, however, commuted his sentence of capital punishment to enforced labor. Then followed a long period of discussions and violent controversies between the anarchists and the socialists over the whole affair. The anarchists claimed the right of theft on the grounds that it was the beginning of capitalist expropriation and that stolen wealth could aid in propaganda and action. The socialists, on the other hand, protested against this theory with extreme vigor. After Duval, there is little noteworthy in the terrorist movement for a period of four years, but with May 1, 1891, there began what is known as _La Periode Tragique_. Five notable figures, Decamps, Ravachol, Vaillant, Henry, and Caserio, within a period of three years, performed a series of terrorist acts that cannot be forgotten. Their utter desperation and abandon, the terrible solemnity of their lives, and the almost superhuman efforts they made to bring society to its knees mark the most tragic and heroic period in the history of anarchism. At Levallois-Perret a demonstration was organized by the anarchists for May 1. They brought out their red and black flags, and, when the police attempted to interfere and to take away their banners, they opened fire upon them. Several fell injured, while others returned the fire. The fight continued for some time, until finally reinforcements arrived and the anarchists were subdued. Six of the police and three of the anarchists were severely injured, one of the latter being Decamps, who had received severe blows from a sword. The trial took place in August, and, when Decamps attempted to defend himself, the judge refused to hear him. Finally he and his friends were condemned to prison.