 During this time he became even more radicalized and upon his return in the 1880s he became the leader of the radical "Fraktion", who were believers in the concept of Propaganda of the deed, which calls for the use of terror against society civil rights.In the early 1880s, Peukert became the editor of "Die Zukunft" (), published by "Der Rebell" (), from 1886 to 1893 he was the editor of "Die Autonomie" () and co-editor after 1889 of "Der Anarchist" ().A so-called civil war within the Socialist League began because of Peukert's friendship with Theodor Reuss.