I hate this question. this question is unable to take an ecological perspective. There are plenty of organisms that cause harm to a subset of a population under

I hate this question. this question is unable to take an ecological perspective. There are plenty of organisms that cause harm to a subset of a population under circumstance or temporarily, they then inevitably feed an orthogonal population. It does not even make sense to say "oh this X just cause harm". It is not a realistic understanding of systems. I would suggest reaching out to an ecologist, or if you want someone to relate it to humans, somebody in "social ecology" In before "Google Bookchin"