Arthur Berger is a retired US Foreign Service officer. He later served as a senior official at the United States Holocaust Museum. Harry D. Wall is a writer long active in human rights causes. They are members of the Board of Directors, The Olga Lengyel Institute for Holocaust Studies and Human Rights. The opinions expressed in this commentary are those of the authors; view more opinion articles on CNN.
(CNN)Eighty years ago this month, Paris and northern France were occupied by German forces. Thousands of Jews and other refugees fled south from the Nazi onslaught. Many of them reached Bordeaux, finding temporary refuge while seeking life-saving visas through Portugal, a neutral nation, and on to the United States and other countries.
Arthur Berger
Harry D. Wall
Some were lucky enough to reach the Portuguese consulate in Bordeaux, where the consul general, Aristides de Sousa Mendes, was granting life-saving transit visas to Portugal, contravening his government's orders.
Earlier this month, the Portuguese parliament unanimously voted to honor Sousa Mendes, who was dismissed from his post and punished for his activities, by creating a monument for him at the National Pantheon.
His actions and legacy carry an important moral message for our times, as racism and anti-immigration rhetoric remains very present throughout the world.
Under the dictator António de Oliveira Salazar, Portugal would only permit holders of visas to other countries to stay in Portugal temporarily. While Portugal had allowed fairly free entry before the war, the imposition of new restrictions, a document known as "Circular 14," issued on November 11, 1939, specifically excluded Jews and other refugees.
What motivated the Portuguese consul to deliberately ignore that policy, jeopardize his career and issue visas to countless refugees gathered in throngs outside the consulate?
Sousa Mendes had struck up a friendship with a rabbi, Chaim Kruger, a refugee from Belgium. The consul offered the rabbi and his immediate family refuge in the consulate and safe passage to Portugal. The rabbi refused, saying he couldn't abandon the thousands of other Jewish refugees in Bordeaux. Sousa Mendes, confronted with a severe moral dilemma, retreated to his bed for three days. When he emerged, he was determined to help the refugees.
Starting on June 17, 1940, working day and night, and mobilizing his sons and volunteer staff among the refugees, he signed thousands (no one knows the exact number) of visas, a life-saving document. He then went to nearby Bayonne, also under his jurisdiction, to issue many more visas. Those who could not afford to pay received them at no charge.
It is "perhaps the largest rescue action by a single individual during the Holocaust" says Israeli Holocaust historian, Professor Yehuda Bauer.
Word soon reached Salazar about the diplomat's vio