Humiliation of prisoners: Social Democratic Party (SPD) inmates hold a placard which reads "I am a class-conscious person, party boss/SPD/party boss." Dachau concentration camp, Germany, between 1933 and 1936. Photograph »

Under SA guard, a group of leading Socialists arrives at the Kislau camp, one of the early concentration camps. Local Social Democratic party leader Ludwig Marum is fourth from the left in the line of arrivals. Kislau, Germany, May 16, 1933. Photograph »

Romani (Gypsy) prisoners line up for roll call in the Dachau concentration camp. Germany, June 20, 1938. Photograph »

Romani (Gypsy) inmates at forced labor in Ravensbrueck concentration camp. Germany, between 1941 and 1944. Photograph »

Identification pictures of a Romani (Gypsy) woman interned in the Auschwitz camp. Poland, ca. 1944. Photograph »

A Romani (Gypsy) victim of Nazi medical experiments to make seawater potable. Dachau concentration camp, Germany, 1944. Photograph »

Soviet prisoners of war in the Mauthausen concentration camp. Austria, January 1942. Photograph »

Column of Soviet prisoners of war from the Ukrainian front. Kharkov, Soviet Union, June 18, 1942. Photograph »

Bodies of Soviet prisoners of war. Place and date uncertain. Photograph »

A victim of the Nazi Euthanasia Program: hospitalized in a psychiatric ward for her nonconformist beliefs and writings, she was murdered on January 26, 1944. Germany, date uncertain. Photograph »

Photograph with the caption: "...because God cannot want the sick and ailing to reproduce." This image originates from a film, produced by the Reich Propaganda Ministry, that aimed through propaganda to develop public sympathy for the Euthanasia Program. Photograph »

Emmi G., a 16-year-old housemaid diagnosed as schizophrenic. She was sterilized and sent to the Meseritz-Obrawalde euthanasia center where she was killed with an overdose of tranquilizers on December 7, 1942. Place and date uncertain. Photograph »

Helene Gotthold, a Jehovah's Witness, was beheaded for her religious beliefs on December 8, 1944, in Berlin. She is pictured with her children. Germany, June 25, 1936. Photograph »

Waltraud Kusserow, a Jehovah's Witness, was arrested several times for refusing to make the "Heil Hitler" salute. She spent two and a half years in prison. Germany, after 1945. Photograph »

Polish citizens hanged by the Nazis in Sosnowiec. Poland, wartime. Photograph »

An official order incarcerating the accused in the Sachsenhausen concentration camp for committing homosexual acts. Photograph »

An author and actor who was imprisoned in 1937 for 27 months for homosexuality. In 1942, he was deported to Sachsenhausen concentration camp where he was a prisoner for three years. Berlin, Germany, before 1937. Photograph »

Interior designer from Duesseldorf who was charged with homosexuality and imprisoned for 18 months. Duesseldorf, Germany, date uncertain. Photograph »