The Holocaust was the systematic, bureaucratic, state-sponsored persecution and murder of six million Jews by the Nazi regime and its collaborators.
U.S. Reaction to the Holocaust
During the time when the Nazis came to power, America was making it very hard for people to immigrate there. They put various restrictions on all travel to the U.S. and visa approvals were delayed on national security grounds. Nevertheless over half the immigrants to the U.S. in 1939 and 1940 were Jewish. New York Times newspaper delayed publishing information in the newspaper and when they did, it was in the back of it.
The Death Camps
Concentration camps were the places where the Germans sent Jews to work until they were killed. Conditions were terrible and about 6 million were killed before the war ended. Although SS (Schutzstaffel; Protection Squadrons—the elite guard of the Nazi party) used the Jews for forced labor on many construction projects, they purposely undernourished and mistreated them. So many Jews died during their back-breaking labor that they believed that they were being "annihilated through work."
Actions of Germany under Hitler
One would not think it, but many Germans were not in support of the war when it first started. The loss of their people in WWI was still too fresh on their minds. Hitler started to get support when he released propaganda that insisted that they were only protecting themselves from the Jewish people. He told them that they were racially superior and on the verge of extinction, so the people rallied behind him. He guaranteed victory through miracle weapons or sheer willpower. When faced with defeat, Hitler responded with increased terror and with propaganda aimed at inspiring fanaticism.