AStonesThrow

https://en.wikipedia.org/wiki/Rodef

A rodef (Hebrew: רודף, lit. "pursuer"; pl. רודפים, rodfim), in traditional (((Jewish))) law, is one who is "pursuing" another to murder him or her. According to (((Jewish law))), such a person must be stopped—even killed—by any bystander after that pursuer has been warned and refuses to stop. A source for this law appears in the (((Babylonian Talmud))):

And these are the ones whom one must save even with their lives [i. e., killing the (((wrongdoer)))]: one who pursues his (((fellow))) to kill him [rodef achar chavero le-horgo], and after a male or a betrothed maiden [to rape them]; but one who pursues an animal, or desecrates the Sabbath, or commits idolatry are not saved with their lives.[1]

https://en.wikipedia.org/wiki/Aktion_T4

https://en.wikipedia.org/wiki/Pikuach_nefesh

Abortion is also [mandatory] in (((Jewish law))) if the (((preborn child))) is endangering the (((mother)))'s life, because the (((child))) is then considered to be a rodef. The "rodef" assertion is also used to permit the separation of (((conjoined twins))) when it is likely or even certain that one will die as a result of the operation if this is necessary to save the other.[6] https://en.wikipedia.org/wiki/Josef_Mengele