Revolutionäre Gewerkschafts-Opposition

The Revolutionäre Gewerkschafts Opposition (Revolutionary Union Opposition) was the communist union in Germany during the Weimar Republic. It went underground after the Nazi Party seized control of the government and continued operating until it was crushed by the Nazis in 1935.

The Communist International, (Comintern) and the KPD had both wanted to create their own revolutionary unions and had attempted to use the Union of Manual and Intellectual Workers, which had a high proportion of KPD members within its ranks, to that end. The KPD's relationship with the Union was strained by the lack of discipline within the Union and eventually, the relationship was ended.

In 1928, after the 4th World Congress of the Profintern and the 6th World Congress of the Comintern, an ultra left position was taken by communists toward social democrats, branding them as social fascists. Efforts to establish an independent union were renewed, and the KPD began to systematically set up an opposing faction within the Allgemeiner Deutscher Gewerkschaftsbund (ADGB).

On March 14, 1929, the central committee of the Communist Party of Germany (KPD) decided to register as members people who had been expelled as radicals from a trade union. In June 1929, Michael Niederkirchner was expelled from the German Metal Workers' Federation and founded an aid organization for others who had been expelled, which later became the core of the RGO. The KPD founded the RGO in December 1929 with the idea of consolidating the left within the ADGB. Those KPD members still in the ADGB became the principal opposition from within.

As of 1930, the RGO was promoted as a "red class trade union" and several cross-over campaigns were initiated, but never to great success. The RGO had a membership in 1932 of about 250,000 members. Large sections of the unionist wing of the KPD left the party and more than half of the RGO was unemployed. To bolster appearances, the RGO counted only admissions, not those who dropped out. Because the communists lost influence in the trade unions from people leaving, and to a lesser extent, from expulsions, in 1931, they changed their strategy. Communists were to mount opposition within the ADGB and other such groups in order to strengthen "red associations", organizations that would develop into communist unions. This turned the RGO into a communist front organization, but it was unable to convert itself into a communist union movement. The three largest "red associations" organized were in metalworking, mining and construction and even they were never more than 1% of the workforce. The RGO leadership was never elected at normal union meetings, rather it emerged from the trade union section of the KPD's central committee.

...
Wikipedia