Union of Communist Groups

The Union of Communist Groups was founded in the spring of 1920 as followers of Neumann moved away from the Federation of Czech Anarcho-Communists.

[1][2] With the founding of the Union of Communist Groups Červen issued a declaration denouncing any collaboration with the Czechoslovak Socialist Party.

[1] The Union of Communist Groups sent a delegation to the 2nd World Congress of the Comintern; consisting of Ivan Olbracht, Emanuel Vajtauer, Hugo Sonnenschein and Helena Malířová.

Following the congress, the Union of Communist Groups unsuccessfully sought recognition as the Czechoslovak section of the International.

The Union of Communist Group expressed strong criticism against the Social Democratic Left led by Bohumír Šmeral, accusing it of opportunism.