 Complete the following phrase:  To promote party unity, factions within the Bolshevik party were banned at the 10th Party Congress in 1921. Despite the ban, unofficial factions remained, and differing opinions continued to be voiced. The future goals of the United Opposition were expressed by multiple groups throughout the 1920s. In 1923, echoing letters that Trotsky wrote to the Central Committee during the same period, dissident party members released the Platform of the Forty-Six, criticizing growing bureaucratization and censorship within the party. The Platform criticized the leadership structure of the party, where decisions were increasingly dictated from the top, and the influence of workers and average voters was steadily decreased. Despite the efforts of the oppositionists, Trotsky prominent among them, the 