Around 1920 there were tensions in the Labour Party. The radical wing spearheaded by Martin Tranmæl and Kyrre Grepp had assumed control over the party at the 1918 national convention. The party aligned itself with the Comintern. As a result, a moderate wing broke out in 1921 to form the Social Democratic Labour Party. Nonetheless, "Social-Demokraten" remained affiliated with the Labour Party, as Martin Tranmæl assumed the editorship in 1921. In 1923, the same year as the Labour Party renounced the Comintern and the communist wing broke away, "Social-Demokraten" changed its name to "Arbeiderbladet" (lit. 'The Worker Paper') in 1923. The factionalism was contrary to the goal of Christian Holtermann Knudsen, who wanted to unite the fledgling labour movement.