The Buddha is quoted in the Dhammapada as having taught that hatred cannot end by hatred; that only love can end hatred.
This is a hard teaching. It is contrary to our sense of justice – but then, what is justice among men. It sounds weak to those who value retribution. It is at odds with pride and honor. It sounds like a rationalization for not doing the dirty work that needs doing.
I don’t have to look far to find those reactions; I need only look within.
A boy asked the grandfather, Which wolf will win?
The grandfather said, The one you feed.