In fact, the Nazis systematically used poison gas as part of its genocide of 6 million Jews and others. The Nazis began experimenting with gas with the specific purpose of carrying out mass murder in the late 1930s. After the Nazis invaded the Soviet Union, they deployed gas vans to kill hundreds of thousands of people. By 1942, the Nazis had set up a series of concentration camps where gas chambers were the main method of killing people. At its peak, as many as 6,000 people, mostly Jews, were gassed to death every day at Auschwitz concentration camp alone.
During his comments, Spicer also referred to Nazi concentration camps as « holocaust centers. »