Partisans led active campaigns with public demonstrations at concerts, writings published in the press denigrating reputations, and other public slights designed to embarrass their adversaries. Brahms published a manifesto for the "Serious Music" side on 4 May 1861, signed by Clara Schumann, Joachim, Albert Dietrich, Woldemar Bargiel, and twenty others, which decried the purveyors of the "Music of the Future" as "contrary to the innermost spirit of music, strongly to be deplored and condemned". The "New Weimar Club", a formal society with Liszt at its center, held an anniversary celebration of the "Neue Zeitschrift für Musik", the magazine Robert Schumann had founded, in his birthplace Zwickau, and conspicuously neglected to invite members of the opposing party, including his widow, Clara. Clara Schumann ceased to perform any of Liszt's works, and she suppressed her husband's dedication to Liszt of his "Fantasie in C major" when she published his complete works. When she heard that Liszt and Richard Wagner would be participating in a Beethoven centenary festival in Vienna in 1870, she refused to attend.