2. A third powerful factor in the diffusion of Communism is the conspiracy of silence on the part of a large section of the non-Catholic press of the world. We say conspiracy, because it is impossible otherwise to explain how a press usually so eager to exploit even the little daily incidents of life has been able to remain silent for so long about the horrors perpetrated in Russia, in Mexico and even in a great part of Spain; and that it should have relatively so little to say concerning a world organization as vast as Russian Communism. This silence is due in part to shortsighted political policy, and is favored by various occult forces which for a long time have been working for the overthrow of the Christian Social Order. (Papal Encyclical, Divini Redemptoris, 19 March 1937).