In another series, L'histoire ancienne, he took aim at the constraining pseudo-classicism of the art of the period. In 1848 Daumier embarked again on his political campaign, still in the service of Le Charivari, which he left in 1863 and rejoined in 1864. Around the mid-1840s, Daumier started publishing his famous caricatures depicting members of the legal profession, known as 'Les Gens de Justice', a scathing satire about judges, defendants, attorneys and corrupt, greedy lawyers in general. A number of extremely rare albums appeared on white paper, covering 39 different legal themes, of which 37 had previously been published in the Charivari. It has been said that Daumier's own experience as an employee in a bailiff's office during his youth may have influenced his rather negative attitude towards the legal profession. In 1834 he produced the lithograph Rue Transnonain, 15 April 1834 depicting the massacre in the rue transnoin which was part of the April 1834 riots in Paris. It was designed for the subscription publication L'Association Mensuelle. The profits were to promote freedom of the press and defrayed legal costs of a lawsuit against the satirical, politically progressive journal Le Charivari to which Daumier contributed regularly. The police discovered the print hanging in the window of printseller Ernest Jean Aubert in the Galerie Véro-Dodat (passageway in 1st arrondissement) and subsequently tracked down and confiscated as many of the prints they could find, along with the original lithographic stone on which the image was drawn. Existing prints of Rue Transnonain are survivors of this effort. Legacy Baudelaire noted of him: l'un des hommes les plus importants, je ne dirai pas seulement de la caricature, mais encore de l'art moderne. (One of the most important men, not only, I would say, in caricature, but also in modern art.) Vincent van Gogh was also a great admirer of his work. The first of many monographs on Daumier was published less than ten years after his death, by Arsène Alexander, Honoré Daumier, l'hommé et l'oeuvre, in 1888. An exhibition of his works was held at the École des Beaux-Arts in 1901. Daumier's works are found in many of the world's leading art museums, including the Louvre, the Metropolitan Museum of Art and the Rijksmuseum. He is celebrated for a range of works, including a large number of paintings (500) and drawings (1000) some of them depicting the life of Don Quixote, a theme