The Holocaust was the first mass atrocity to be heavily photographed. The mass production and distribution of cameras in the 1930s and 1940s enabled Nazi officials and ordinary people to widely document Germany’s persecution of Jews and other religious and ethnic minorities.

Images of what the Allies found when they liberated the Nazi death camps towards the end of World War II brought the horror of the Holocaust to global attention.

Holocaust Memorial Day on January 27 marks the 80th anniversary of the liberation of Auschwitz. The infamous Nazi death camp was located in German-occupied Poland during World War II. More than 1 million people -- mostly Jews -- were systematically killed at the site.

Despite the Nazis' attempt to erase all traces of the extermination camp when it was dismantled in 1943, Polish researchers and citizens are working to shine a historical light on the 900,000 people who were killed in the camp.

Images of what the Allies found when they liberated the Nazi death camps towards the end of World War II brought the horror of the Holocaust to global attention.

This is a collection of photos chosen by AP photo editors.

This week marks 80 years since the liberation of Auschwitz. Now Etan Smallman is looking back over a 15-year journey to uncover what happened to his Jewish family

Barbed wire lines the road to work for Pawel Sawicki, deputy spokesman of the Auschwitz museum at the site of the former Nazi death camp that

Britain's King Charles will visit Poland later this month to attend commemorations marking the 80th anniversary of the liberation of Auschwitz, the largest Nazi death camp in World War Two.

JASIONKA NEAR RZESZOW, Poland (Reuters) -Two German Patriot air defence units deployed to southeastern Poland to protect a major hub for military and humanitarian supplies to Ukraine will be fully operational by Monday,

Commemorations are being held Monday to mark the 80th anniversary of the liberation of the Auschwitz death camp by Soviet troops