Ethics problem

The organization I work at has so many people who do things which are labeled as unethical. I feel uncomfortable with the same. Many of my colleagues are able to get even more rewards by doing unethical things and once when they get the same, they try to tease me.
I feel bad about the same but at the same time feels helpless and vulnerable.
I am not sure if there exist someone supreme authority who can see right or wrong in the world.

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