In June 1847 the London congress took place and the League of the Just adopted a new charter formally changing the group's name to the Communist League.[8] The Communist League was structured around the formation of primary party units known as "communes," consisting of at least 3 and not more than 10 members.[8] These were in turn to be combined into larger units known as "circles" and "leading circles," governed by a central authority selected at regular congresses.[8] The League's programme called for the overthrow of the bourgeoisie and establishment of the rule of the proletariat and the construction of a new society free both of private property and social classes.[8]