After Stalin's death, Khrushchev rose to the top post by overcoming political adversaries, including Lavrentiy Beria and Georgy Malenkov, in a power struggle. In 1955, Khrushchev achieved the demotion of Malenkov and secured his own position as Soviet leader. Early in his rule and with the support of several members of the Presidium, Khrushchev initiated the Thaw, which effectively ended the Stalinist mass terror of the prior decades and reduced socio-economic oppression considerably. At the 20th Congress held in 1956, Khrushchev denounced Stalin's crimes, being careful to omit any reference to complicity by any sitting Presidium members. His economic policies, while bringing about improvements, were not enough to fix the fundamental problems of the Soviet economy. The standard of living for ordinary citizens did increase; 108 million people moved into new housing between 1956 and 1965.