I commented yesterday on another thread that it's interesting to learn how IBM, Hugo Boss, BMW, etc got involved with the Nazis by seeing how the coward CEOs of today are being sycophantic to a fascistic regime...
Wikipedia reviews a book. "IBM and the Holocaust" [0]
It's just a book review, but it explains what went down for those who don't know.
In a word: reprehensible. Those Hollerith cards were death sentences.
Grossly oversimplifying it, obviously.