Dr. Mengele big time. For those that know the name, but not his history, look up memgele and the experiments he performed. SAME REASON as listed for emmanual, for the public good.
I’m sure that the real Dr. Mengele (like Rahm Emanuel’s brother) also thought of his medical experimentation on human beings to be very “ethical.”
Serial killers - whether loners or Nazi exterminators or the Khmer Rouge - *always* think of themselves as meeting some kind of bizarro whackadoodle “higher calling.”