"When the mass terror erupted in 1936, however, Birobidzhan would be the stage of frightful liquidations, a real pogrom against Jewish communists, the pioneers of this 'centre of Jewish culture. From one day to the next, Professor Liberberg, president of the republic's executive committee, disappeared; a few months later, a newspaper revealed that he had been 'unmasked' as a 'cowardly counterrevolutionary and Trotskyist, a bourgeois nationalist'; in 1937 and 1938, his successors experienced the same fate. In all the regions where a Jewish population was concentrated, thousands of activists of the Jewish sections, party militants, journalists of the Yiddish press and other writers were arrested; among many others, such major figures as Isaac Babel and Osip Mandelstam vanished in the maelstrom."