 When the three arrived in New York, the three joined the Lettish (Latvian) Anarchist Group, an organization primarily devoted to the publication and dissemination of anarchist literature.However, when a number of comrades organized a Lettish Anarchist Red Cross in December 1913, the three became some of its first members.During this same period, Berger, Berg, and Hanson also became active in anarchist labor rights groups and the Anti-Military League.