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Efforts during the Holocaust

As nuncio, Roncalli made efforts during the Holocaust in World War II to save refugees, mostly Jewish people, from the Nazis. Among his efforts were:

In 1965, the Catholic Herald newspaper quoted Pope John XXIII as saying:

We are conscious today that many, many centuries of blindness have cloaked our eyes so that we can no longer see the beauty of Thy chosen people nor recognise in their faces the features of our privileged brethren. We realize that the mark of Cain stands upon our foreheads. Across the centuries our brother Abel has lain in blood which we drew, or shed tears we caused by forgetting Thy love. Forgive us for the curse we falsely attached to their name as Jews. Forgive us for crucifying Thee a second time in their flesh. For we know not what we did.

On 7 September 2000, the International Raoul Wallenberg Foundation launched the International Campaign for the Acknowledgement of the humanitarian actions undertaken by Vatican Nuncio Angelo Giuseppe Roncalli for people, most of whom were Jewish, persecuted by the Nazi regime. The launching took place at the Permanent Observation Mission of the Vatican to the United Nations, in the presence of Vatican State Secretary Cardinal Angelo Sodano.

The International Raoul Wallenberg Foundation has carried out exhaustive historical research related to different events connected with interventions of Nuncio Roncalli in favour of Jewish refugees during the Holocaust. As of September 2000 three reports have been published compiling different studies and materials of historical research about the humanitarian actions carried out by Roncalli when he was nuncio.

In 2011, the International Raoul Wallenberg Foundation submitted a massive file (the Roncalli Dossier) to Yad Vashem, with a strong petition and recommendation to bestow upon him the title of Righteous among the Nations.