[Suzerain of Sheol]

Well, "mind-crime" is a term coined by Nick Bostrom in his book, Superintelligence, as one of the "malignant failure modes" an AI can develop; in this case, it represents the simulation of immoral or unethical behavior in the 'mind' of the AI, such that it is indistinguishable experientially from the actual committing of the act.

It can also describe the actions of humans performed on non-sentient but in every other regard, human-seeming machines/robots. I.e. if you have a torture orgy with your robots, just because they can't experience what you're doing to them, the act for you is completely unable to be parsed from reality (assuming total simulation of human reaction from this brain-dead machine.)

That then gets into the concept of Philosophy Zombies, an old thought experiment to outline solipsism, i.e. 'What if I am the only conscious mind and everyone else merely acts as though they were, but has no internal awareness?'

So, I would hope that gives some insight into that choice of phrase? :P