the formation of the Soviet Union later that year, the GPU was again reorganized as the Joint State Political Directorate (Obyedinyonnoye gosudarstvennoye politicheskoye upravleniye, or OGPU), directly under the Council of People's Commissars. These changes did not diminish Dzerzhinsky's power; he was Minister of the Interior, director of the Cheka/GPU/OGPU, Minister for Communications, and director of the Vesenkha (Supreme Council of National Economy) 1921–24. Indeed, while the (O)GPU was theoretically supposed to act with more restraint than the Cheka, in time its de facto powers grew even greater than those of the Cheka. At his office in Lubyanka, Dzerzhinsky kept a portrait of fellow Polish revolutionary Rosa Luxemburg on the wall. Besides his leadership of the secret police, Dzerzhinsky also took on a number of other roles; he led the fight against typhus in 1918, was chair of the Commissariat for Internal Affairs from 1919 to 1923, initiated a vast orphanage construction program, chaired the Transport Commissariat, organised the embalming of Lenin's body in 1924 and chaired the Society of Friends of Soviet Cinema. Dzerzhinsky and Lenin Dzerzhinsky became a Bolshevik as late as 1917. Therefore, it was wrong to assert (as official Soviet historians did subsequently) that Dzerzhinsky had been one of Lenin's oldest and most reliable comrades, or that Lenin had exercised some sort of spellbinding influence on Dzerzhinsky and the SDKPiL. Lenin and Dzerzhinsky frequently had opposing opinions about many important ideological and political issues of the pre-revolutionary period, and also after the October Revolution. After 1917, Dzerzhinsky would oppose Lenin on such crucial issues as the Brest-Litovsk peace, the trade unions, and Soviet nationality policy. During the April 1917 Party Conference when Lenin accused Dzerzhinsky of Great-Russian chauvinism he replied: "I can reproach him (Lenin) with standing at the point of view of the Polish, Ukrainian and other chauvinists." From 1917 to his death in 1926, Dzerzhinsky was first and foremost a Russian Communist, and Dzerzhinsky's involvement in the affairs of the Polish Communist Party (which was founded in 1918) was minimal. The energy and dedication that had previously been responsible for the building of the SDKPiL would henceforth be devoted to the priorities of the struggle for Bolshevik power in Russia, to the defense of the revolution during the civil war, and eventually, to the tasks of socialist construction. Death and legacy Dzerzhinsky died of a heart attack on 20 July 1926 in Moscow, immediately