When tensions within the Bund heightened, due to the pro-Bolshevik leaning of a part of the leadership, Moisei Rafes was the leader of the centrist wing of the Bund, while Mikhail Liber and Benjamin Kheifetz led the rightists.[4]
However, Rafes led the scissionist Kombund group in Kiev in February 1919, later joined by similar groups in Yekaterinoslav, Kharkov and Poltava, but the Kombund lasted only till May 1919, when it merged into the Komfarband. These moves were apparently motivated by the large-scale pogroms committed by all the armies present in Ukraine at the time, except the Red Army. After the refusal of the Soviet authorities to authorize the formation of a distinct Jewish Communist Party, Rafes, like other former Bundists Esther Frumkin, Alexander Chemerinsky and Rakhmiel Veinshtain, finally joined the upper echelons of the Yevsektsiya, the Jewish section of the Soviet Communist party (CPSU).[5]
Moisei Rafes was at the head of the artistic section of Sovkino and a member of the Sovkino board in the late 1920s and through 1930.[6]