Mariology of the popes John Paul II), visits to Marian shrines (Benedict XVI in 2007) and by actively supporting the fathers of Vatican II as they highlighted the importance of Marian veneration (Popes John XXIII and Paul VI) in "Lumen gentium". Popular views like the Assumption and the Immaculate Conception developed into papal teaching over time. Popes have also limited and cautioned against some devotional practices. In 1674 Pope Clement X (1670–1676) indexed books on Marian piety. After the Council of Trent, "Marian fraternities" were founded, fostering Marian piety, not all of which were approved. Not all Popes took the same view on Marian
The Yugoslav Auschwitz and the Vatican "Jasenovac, das jugoslawische Auschwitz und der Vatikan" published by Ahriman-Verlag GmbH (January 31, 2001). The Yugoslav Auschwitz and the Vatican The Yugoslav Auschwitz and the Vatican is a book written by Vladimir Dedijer, World War II Yugoslav Partisan and revolutionary, a university professor and a human rights activist.The book is a shortened version of Dedijer's two books written in Serbian: "Vatikan i Jasenovac" and "Vatikan i Jasenovac Dokumenti", published by Rad Publishing House Belgrade in 1987. It was published in English under the title, "The Yugoslav Auschwitz and the Vatican: The Croatian Massacre of the Serbs During World War II"