Germany and abroad, in which many Germans faced unemployment. This situation resulted in increasing popularity for the Nazi Party, including amongst workers, small business owners, and others who desired a government that would resolve the economic crisis. While ascending to power, Hitler promised to restore faith in the Volk and to bring wholeness while accusing other politicians of tearing at German unity. Upon rising to power in 1933, the Nazis sought to gain support of various elements of society. Their concept of Volksgemeinschaft was racially unified and organized hierarchically. This involved a mystical unity, a form of racial soul uniting all Germans, including those living abroad. Nevertheless, this soul was regarded as related to the land, in the doctrine of "blood and soil". Indeed, one reason for "blood and soil" was the belief that landowner and peasant lived in an organic harmony. Aryan Germans who had sexual relations with non-Germanics were excluded from the people's community. The Nazis solidified support amongst nationalists and conservatives by presenting themselves as allied with President Paul von Hindenburg, who was considered a war hero of World War I in Germany. On 21 March 1933, special celebrations were held to mark the re-opening of the Reichstag following the Reichstag fire, and the Nazis called this event Potsdam Day. Potsdam Day was used to celebrate military tradition, the Hohenzollern dynasty of Prussia, the sacrifices of World War I and the "hero of Tannenberg," President Hindenburg. The image of Hitler and Hindenburg shaking hands was reproduced on thousands of postcards, representing "the union of the new and old Germany," a way for the Nazis to portray themselves as connected to the aristocratic traditions of the past. Having organized Potsdam Day to gain conservative support, the Nazis sought to gain the support of workers by declaring May Day, a day celebrated by organized labour, to be a paid holiday named the "Day of National Work" and held celebrations on 1 May 1933 to honour German workers. The regime believed that the only way to avoid a repeat of the disaster of 1918 was to secure workers' support for the German government. The regime also insisted through propaganda that all Germans take part in the May Day celebrations, not just workers, in the hope that this would help break down class hostility between workers and burghers. Songs in praise of labour and workers were played by state radio throughout