OSWIECIM, POLAND - JANUARY 27: (From L to R), starting at second seat, Queen Letizia of Spain, King Felipe of Spain, Queen Maxima of the Netherlands and King Willem of the Netherlands attend the official ceremony to mark the 75th anniversary of the liberation of the Auschwitz concentration camp at the Auschwitz-Birkenau site on January 27, 2020 near Oswiecim, Poland. International leaders as well as approximately 200 survivors and their families are gathering today at Auschwitz today to attend the commemoration. The Nazis killed an estimated one million people at the camp during the World War II occupation of Poland by Nazi Germany. The Soviet Army liberated the camp on January 27, 1945. (Photo by Sean Gallup/Getty Images)
