More or less any industry on the moon would need a "cheap" way of getting mass to Earth. Without that, there's no point in putting the industry on the moon.
So when the BigBadBallBearing company builds their factory on the moon, they will include the means to get their products back to Earth, and those means, like many other tools, can be used for good or bad purposes.
Somewhere, there's a computer that's "Preparing to configure Windows" after it rebooted in the middle of a flight scheduling run.
Or stuck at a BIOS prompt saying "No keyboard found, press F1 to continue."
If you can't handle the distinction between murder and killing, then, again, just stop.
How do you define the difference between murder and killing?
There are many possible differentiators, here are a couple that come to mind:
Murder is killing for no reason.
Murder is killing for no *good* reason.
I'm just curious as to how you might distinguish between the two without resorting to something like "I know it when I see it".
A computer without COBOL and Fortran is like a piece of chocolate cake without ketchup and mustard.