Many Austrians of all different social circles such as Georg Ritter von Schönerer promoted strong pan-Germanism in hope of reinforcing an ethnic German identity and the annexation of Austria to Germany. Some Austrians such as Karl Lueger also used pan-Germanism as a form of populism to further their own political goals. Although Bismarck's policies excluded Austria and the German Austrians from Germany, many Austrian pan-Germans idolized him and wore blue cornflowers, known to be the favourite flower of German Emperor William I, in their buttonholes, along with cockades in the German national colours (black, red, and yellow), although they were both temporarily banned in Austrian schools, as a way to show discontent towards the multi-ethnic empire.