Back during World War II, some people lied to save Jewish lives.
More recently, Lila Rose has used undercover tactics to expose Planned Parenthood.
At issue is the question of whether it is ever okay to lie, particularly when you’re trying to save lives.
We live in a violent world, and the issue keeps coming up in human history.
Here is some information you might want to be aware of involving Pope Francis.
I’m not sure that this qualifies as a definitive answer but it is a question that has been asked many times on these forums. I know because I’ve joined several.
This is a great article for laying out all the points of view in a reasonable way. Needless to say, Pope Francis’ own choices are interesting even if they don’t quite settle the matter.
Indeed, the original edition of the Catechism of the Catholic Church contained a definition of lying that seemed to endorse a proposal made some decades ago that restricted what counts as a lie to telling a falsehood with the intent to deceive a person who had the right to know the truth.
I still believe that this is the best definition of lying for the purpose of determining what is a sin. It never made sense to me that it would be ok to kill someone (in self defense or to protect the innocent) but not to lie to them for the same purpose.