Excerpts from Books and Wikipedia
"Khrushchev decried the cult of personality that Stalin had built around himself. . . . Khrushchev claimed that the seemingly infallible leader had in fact been a despot guilty of crimes against the Soviet people. No wonder delegates were stunned and amazed. Thousands of prisoners were released from the Gulag and statues of Stalin were removed. . . . The turning point came when Khrushchev sent troops into Hungary, declaring he was a Stalinist in his determination to fight against the class enemy." [Furtado: 1001 Days]