The league embraced workers, peasants, students, and intelligentsia. It had its first affiliates at factories, plants, collective farms ("kolkhozy"), and educational institutions. By the beginning of 1941 it had about 3.5 million members from 100 ethnicities. It had about 96,000 offices across the country. Guided by Bolshevik principles of communist propaganda and by the Party's orders with regards to religion, the League aimed at exterminating religion in all its manifestations and forming an anti-religious scientific mindset among the workers. It propagated atheism and scientific achievements, conducted so-called "individual work" (a method of sending atheist tutors to meet with individual believers to attempt to make them renounce their faith); most of the peasantry was unimpressed, and even the party apparatus regarded the League as meddling and inefficient. The League's slogan was "Struggle against religion is struggle for socialism", which was meant to tie in their atheist views with the Communist drive to 'build Socialism'. One of the slogans adopted at the 2nd congress proclaimed: "Struggle against religion is struggle for the five-year plan!" The League had international connections; it was part of the International of Proletarian Freethinkers and later of the Worldwide Freethinkers Union. By the mid-1930s, the Communist regime considered socialism to have been 'built', and the League adopted a new slogan: "Struggle against religion is struggle for communism", communism being the next stage after socialism according to Stalinist ideology.