I take on Holocaust denial using documents and facts. http://www.nizkor.org/hweb/camps/auschwitz/crematoria/
Information on Auschwitz-Birkenau.
A letter specifying the need for the technology of death.
Testimony about the technology:
“Topf and Sons” was responsible for the construction of killing technology at Auschwitz-Birkenau.
Quite graphic testimony from one of the SS.