The systematic murder of disabled people under Nazi rule.
The machinery of mass murder was tested first on disabled people.
Action T4 was the Nazi programme that murdered disabled people, psychiatric patients and others labelled unworthy of life.
Doctors, nurses and administrators were involved. People were assessed, transported and killed using methods that later fed into the wider machinery of the Holocaust.
This cannot be treated as a side note. Disabled people were not accidentally caught in Nazi violence. They were deliberately targeted.
The logic was that some lives were not worth living. That idea is one of the most dangerous ideas humans have ever built into a system.
The lesson is absolute: any system that starts ranking lives by worth, purity, productivity or burden has already crossed a moral line.
Awareverse exists on the opposite side of that line.