The forerunner of the Berlin Secession had arisen in 1892 with formation of Die Gruppe der Elf (The Eleven, or The XI). Leistikow, Liebermann, and 9 of their colleagues broke away at that time from the established art association, the Verein Berliner Künstler. The Verein had full support of Emperor Wilhelm II: his conservative and pro-Imperial Germanic policies influenced the production and display of the works from accepted Verein artists. Coinciding with this rupture was a one-man show by Edvard Munch (JAMA cover, March 7, 2001); his works, once hung in the gallery, were considered too shocking and inappropriate for the Verein, and his exhibit was terminated. Leistikow came to Munch's defense, writing a facetious article—under the alias Walter Selber (“Walter Himself”)—in the Freie Bühne. The painters had become friends, and in 1902, Munch executed a lithographic portrait of Leistikow and his wife, Danish poet Anna Mohr Leistikow. The Secession commenced in earnest when the Verein jury, in 1898, rejected Leistikow's landscape painting Grunewaldsee. The Berlin Secession exhibited until 1913, although Lovis Corinth (Leistikow's friend and biographer) wrote that when Leistikow died in 1908, the Secession “fell apart.” Leistikow, as the secretary for the Secession, worked closely in the beginning with business managers Paul and Bruno Cassirer to establish permanent gallery space for the Secession's exhibits.