Bełżec extermination camp
Lorenz Hackenholt (26 June 1914 missing 1945, declared legally dead as of 31 December 1945) was a member of the "Schutzstaffel" (SS) with the rank of "Hauptscharführer" (First Sergeant). During World War II Hackenholt built and operated the gas chamber at the Bełżec extermination camp in occupied Poland. In so doing, he personally carried out the murder of hundreds of thousands of people.