There's infinite levels of badness and eventually it does reach a point, be it in risk, probability, magnitude, or impact, in which it is super bad, and we may consider it violence, or murder, or crimes against humanity, or what have you.
Everything is not everything else. Scale not only matters, it's almost the only thing that matters.
Nobody can really because it's complicated. Or, at least, nobody can agree, which is why we have the terms. However, I think the terms have some validity, because the broader concept does.
I mean, is Hitler a murderer? Is your run of the mill burglary gone wrong worse than the Holocaust? Obviously not. So there has to be some kind of understanding of organized death.
Everything is not everything else. Scale not only matters, it's almost the only thing that matters.