
http://www.reformation.org/holocaus.html
The Fatima Cult derived from the alleged appearance of the Virgin Mary to three sickly children at Fatima, Portugal, in 1917.
Following the appearance of Bolshevik Russia and World Communism between the First and Second World Wars, the Cult was soon transformed into an ideological crusade.
The Virgin's prophecy that Bolshevik Russia, unless annihilated, would bring destruction to all nations became a powerful religious and ideological weapon in the armory of the Catholic Church and her political allies; this particularly during the rise of Hitler, who preached exactly the same doctrine.
The Fatima Cult, with its anti-Russian message, was magnified by Pope Pius XII, who gave it a new impetus when Russia was attacked by Hitler in 1941.
After the War, Pius XII used it in his conduct of the Cold War. Monster pilgrimages, totaling one million people each, were organized to the Fatima Shrine. The Pope used to send his own Papal Legate to give official sanction to the political message of the Virgin Mary.