The Nazi Party was a German political party of National Socialism. Founded in 1919 as the German Workers' Party, it changed its name to the National Socialist German Workers' Party when Adolf Hitler became leader (192021). The nickname Nazi was taken from the first word of its full name, Nationalsozialistische Deutsche Arbeiter-Partei. The party grew from its home base in Bavaria and attracted members from disaffected elements throughout Germany. It organized strong-arm groups (later the SA) to protect its rallies.