Two years later, they applied for a patent for a “continuous-operation corpse incineration oven for mass use,” knowing the Nazis would use the ovens to dispose of corpses of Jews, Gypsies and others murdered en masse in the gas chambers of Auschwitz-Birkenau.

A patent. To stay ahead of the competition. Just a regular business practice.

This is a tiny start to the kind of education needed, and not just in Europe. I think it can start now because the ones who could not despise their own denial (good phrase) are dying off.