UNITED NATIONS, Jan. 21 (Xinhua) -- United Nations Secretary-General Antonio Guterres on Tuesday called on the international community to stand firm against hatred of all kinds.

"We will stand firm every day and everywhere against antisemitism, bigotry and hatred of all kinds," the secretary-general said at the opening of an exhibit marking the 75th anniversary of the liberation of Auschwitz-Birkenau, held at the UN headquarters in New York.

"The past few years have seen a frightening upsurge in antisemitic attacks both in Europe and the United States, part of a troubling increase in xenophobia, homophobia, discrimination and hatred of all kinds. Even Nazism itself is threatening to reemerge -- sometimes openly, sometimes in disguise," said the UN chief.

"Remembrance and education are an essential part of our prevention efforts, because ignorance creates fertile ground for false narratives and lies," Guterres said. "'Never again' means telling the story again and again."

"Understanding our history connects us to the essential human values of truth, respect, justice and compassion ... As these values come under attack from all sides, we must reaffirm them more strongly than ever," Guterres added.

The Germans established the Auschwitz camp in 1940, initially for the imprisonment of Poles. Auschwitz II-Birkenau was established two years later. At least 1.1 million people were killed at Auschwitz, including Poles, Romanians, Soviet captives and others.

The camp was liberated on Jan. 27, 1945 and declared a national memorial site in 1947.