As a boy of fourteen, Joseph Ratzinger had a cousin who had been born with Down's Syndrome, only a bit younger than himself. In 1941, German state "therapists" came to the boy's house and probably informed the parents of the government regulation that prohibited mentally handicapped children from remaining in their parents' home. In spite of the family's pleas, the representatives of the Nazi state took the child away. The Ratzinger family never saw him again. Later the family learned that he had "died," most likely murdered, for being "undesirable," a blemish in the race and a drain on the productivity of the nation. This was Joseph Ratzinger's first experience of a murderous philosophy that asserts that some people are disposable.
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HT Catholic Exchange