A man learned that the Buddha observed the principle of great love which returns good for evil, kindness for abuse. Believing this was ridiculous and unjust, the man went to the Buddha to chastise him for his foolishness.
The Buddha was silent, pitying the poor man. When the man had finished his attack, the Buddha asked him, “Sir, if a man declined to accept a present made to him, to whom would the present belong?” The man answered, “In that case, it would belong to the man who offered it.”
“My son,” said the Buddha, “You have railed at me but I decline to accept your abuse. Thus, you keep it yourself and it will be a source of misery to you. As the echo belongs to the sound and the shadow to the substance, so misery belongs to the miserable and abuse belongs to the abuser.”
The man made no reply so the Buddha continued, “A wicked man who reproaches a virtuous one is like a man who looks up and spits at heaven. The spittle soils not heaven, but comes back and defiles the man. The slanderer is like one who flings dust at another when the wind is contrary. The dust merely returns to the man who threw it. The virtuous man cannot be hurt and the abuse that the other would inflict comes back on himself.”
Everyone is our mirror and how we treat others reflects where we are in our process of healing. Abuse of others is a reflection so self-abuse. Self-abuse is a reflection of self-hate. Self-hate is a reflection of our separation from Source. It is that simple. Heal the sense of separation from Source and every discord will dissolve.
Remember that the sense of separation from Source is part of the illusion. However, we cannot heal our perception of separation from Source until we heal the perception that we are separate from the rest of humanity, individually or collectively. One cannot claim that we are all one and rail at anyone else no matter what the justification.