Religious leaders mark the 77th anniversary of the liberation of Auschwitz-Birkenau at the death camp, Jan. 27, 2022. / Wojciech Grabowski/www.auschwitz.org.

Oświęcim, Poland, Jan 28, 2022 / 03:37 am (CNA).

Polish Bishop Piotr Greger was among those who offered prayers at the commemoration.

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