Don't let anybody tarnish it when you know you've live up to your own set of ethics

from Christopher Dorner – Manifesto on Rap Genius

Meaning

Dorner is saying don’t allow anyone to come in between you and your morals. Don’t let anyone corrupt you or fog the goals you have set yourself. Obviously a reference to what the LAPD does not only to the people, but their own department of justice.

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