In "Religion in the Soviet Union" (1962), Walter Kolarz notes:
"Islam…is attacked by the communists because it is 'reactionary', encourages nationalist narrowmindness and obstructs the education and emancipation of women. Baha'iism(sic) has incurred communist displeasure for exactly the opposite reasons. It is dangerous to Communism because of its broadmindness, its tolerance, its international outlook, the attention it pays to women's education and its insistence on equality of the sexes. All this contradicts the communist thesis about the backwardness of all religions."