 Complete the following phrase:  An attempt to put such principles into practice leads to the fact that at the Second Congress of the Russian Social Democratic Labor Party 1903 Lenin got into a personal quarrel with the leader of Menshevism Yuli Martov, and the Russian Social Democratic Labor Party  to a split into Bolshevik and Menshevik factions. Since Lenin did not succeed in transforming the entire Social Democratic Party on his own principles, he is taking a course to form his faction into a separate party, forming parallel party structures; thus, at the end of 1904, his supporters formed the Bureau of Majority Committees, in fact a parallel Central Committee of the still united Russian Social Democratic Labor Party. At the 