Yes but there's six billion of our species and very few rhino left. You could wipe out all the world's poachers and it be a rounding error on human population. While I don't think advocating killing anyone is a good idea, I have no sympathy for poachers.
Yeah, it sure is an affront to the basics of civilized society when violent criminals are prosecuted. I mean, what justification is there aside from "we don't like them"?
(Shrug) Sorry, I'm not 'equal' to a poacher. That's an idea that somebody spun from whole cloth, one that a lot of other people seem to accept as an unjustified axiom.