Hitler joined the German Workers' Party, one of a number of right-wing extreme nationalist parties in Munich. By the summer of 1921, Hitler had assumed total control of the party, which he renamed the National Socialist German Workers' Party, or Nazi for short. His idea was that the party's name would distinguish the Nazis from the socialist parties while gaining support from both working-class and nationalist circles. He worked to develop the party into a mass political movement with flags, badges, uniforms, its own newspaper, and its own police force/militia known as the SA, the Sturmabteilung, or Storm Troops. The SA was used to defend the party in meeting halls and to break up the meetings of other parties. Hitler's oratorical skills were largely responsible for attracting an increasing number of followers.