The Holocaust: After a closely supervised visit to Theresienstadt Ghetto in German-occupied Czechoslovakia, Red Cross official Maurice Rossel reported that conditions there were "almost normal".

The Holocaust, known in Hebrew as the Shoah, was the genocide of European Jews during World War II. From 1941 to 1945, Nazi Germany and its collaborators systematically murdered some six million Jews across German-occupied Europe, around two-thirds of Europe's Jewish population. The murders were committed primarily through mass shootings across Eastern Europe and poison gas chambers in extermination camps, chiefly Auschwitz-Birkenau, Treblinka, Belzec, Sobibor, and Chełmno in occupied Poland. Separate Nazi persecutions killed millions of other non-Jewish civilians and prisoners of war (POWs); the term Holocaust is sometimes used to include the murder and persecution of non-Jewish groups.

During World War II, the Theresienstadt Ghetto was used by the Nazi SS as a "model ghetto" for deceiving International Committee of the Red Cross representatives about the ongoing Holocaust and the Nazi plan to murder all Jews. The German Red Cross visited the ghetto in 1943 and filed the only accurate report on the ghetto, describing overcrowding and undernourishment. In 1944, the ghetto was "beautified" in preparation for a delegation from the International Committee of the Red Cross (ICRC) and the Danish government. The delegation visited on 23 June; ICRC delegate Maurice Rossel wrote a favorable report on the ghetto and claimed that no one was deported from Theresienstadt. In April 1945, another ICRC delegation was allowed to visit the ghetto; despite the contemporaneous liberation of other concentration camps, it continued to repeat Rossel's erroneous findings. The SS turned over the ghetto to the ICRC on 2 May, several days before the end of the war.

Theresienstadt Ghetto was established by the SS during World War II in the fortress town of Terezín, in the Protectorate of Bohemia and Moravia. Theresienstadt served as a waystation to the extermination camps. Its conditions were deliberately engineered to hasten the death of its prisoners, and the ghetto also served a propaganda role. Unlike other ghettos, the use of slavery was not economically significant.