  Upon her return to Germany, in 1907, “bloody Rosa” as she became known to the liberal press was engaged as a teacher in the Party School, where she taught “Introduction to Economics” and “Marx’s Capital” to rank and file members of the SPD. Her “Introduction to Economics” based on lecture notes survives only in fragments but “The Accumulation of Capital”, published in 1913, is one of the most important works of theory to have emerged from the Second International. At the same time, her political stance continued to evolve in a direction opposite to the SPD leadership, whose growing reluctance to condemn the imperialist ventures of Kaiser Wilhelm II in Morocco made her vividly aware both of the dangers of stirring nationalist sentiments to increase support for a possible war, and of the evasive attitudes of her colleagues toward rising militarism. She felt increasingly isolated. While the parliamentary party became entangled in debates around taxation and suffrage reform, she wrote to advocate the importance of mass struggles, the agitation for a democratic republic and the conquest of political power by the proletariat. Her proposals were met with hostility even from erstwhile allies like Karl Kautsky, and the main party publications refused to publish her work.