The Jedi act like their Justice, but when did Justice become Genocide is the question.
I still don't see how anyone can justify the death of an entire species and claim it to be Justice.
Justice is a very opinionated word.
Lets say we live in SW. There is a species that is born to be evil and cannot be turned to the Light. And every famous member of their species was evil and they abolished planets and invaded/conquered others.
For the Sith Species, its very similar to spartans. Your either evil and you join your fellow race or you die by your own kind's hand.