# Aktion T4 **Domain:** Mass atrocity and administrative classification **Doc Type:** Developed Historical Node **Maturity:** Developed **Collection:** [[collections/Gamification|Gamification Collection]] ## Definition **Aktion T4** was the Nazi regime's clandestine program for systematically murdering institutionalized people with mental and physical disabilities. Beginning in 1939, medical and administrative systems classified patients, transported selected victims, falsified records, and killed them at designated facilities. ## Why it belongs here T4 is not a loose analogy for modern moderation. It is an extreme historical case showing how apparently administrative questionnaires, expert review, euphemism, and routinized routing can become machinery of murder when the state defines a class of people as disposable. ## Sources - U.S. Holocaust Memorial Museum, [Euthanasia Program and Aktion T4](https://encyclopedia.ushmm.org/content/en/article/euthanasia-program) ## Routes [[wiki/Meldebogen|Meldebogen]] · [[wiki/Democide|Democide]] · [[wiki/Cost Matrix|Cost Matrix]]